Renzo Rivolta - engineer

Entrepreneur who invented the ‘bubble car’

Rivolta's Isetta filled a gap in the auto market
between motorcycles and scooters and cars

Renzo Rivolta, the businessman and engineer behind the ‘bubble car’ phenomenon of the 1950s, was born in Desio, a town in Lombardy about 20km (12 miles) north of Milan, on this day in 1908.

A visionary entrepreneur, Rivolta conceived the three-wheeled vehicle as a crossover between a motorcycle and a car, to bridge the gap in the market between conventional motorcycles and scooters and Italy’s cheapest car, the Fiat Topolino.

Named the Isetta, the car was essentially egg-shaped with just about room for two adults on the one seat. The nose section was also the access door, with a rack attached to the rear to carry a small amount of luggage. Because of its shape and bubble-like windows, it became known as a bubble car.

In the event, it was not particularly successful in Italy, yet it was a hit with buyers in other parts of Europe and in South America, where it was produced under licence.  

In Germany it is remembered as the car that saved BMW.  The company’s decision to invest in the Isetta, sold in Germany as the BMW Isetta 250, enabled a postwar recovery that was in serious doubt with the market in luxury cars slow to pick up.

Renzo Rivolta's business began
by manufacturing refrigerators

The first BMW Isettas rolled off the production line in 1955 and eventually more than 160,000 were sold. Isettas were built under licence in Argentina, Brazil, Spain, Belgium, France and the United Kingdom. Unlike the version produced in England, the German Isetta had four wheels as opposed to three, albeit with the rear two wheels positioned closer together than the front.

The car also sparked a rash of copies, with companies in Europe such as Messerschmitt, Heinkel, Vespa and Renault producing their own microcars. Britain’s roads saw the Peel P50, the Scootacar and the Bond Bug follow the trend, their popularity helped by road tax on three-wheelers being the same as for two-wheeled vehicles. 

Renzo Rivolta’s family in Desio were in the lumbar business. As a young man, as well as studying engineering, he had a passion for cars, motorcycles and speed boats, in all of which he raced. The Monza motor racing circuit was just a few kilometres from the family home.

One of his earliest business ventures, however, involved none of those things but refrigerators. In 1940, he bought a company called Isothermos, which had a factory just outside Genoa making heaters and chillers. When the factory was damaged in a bombing raid in 1942, he moved production to new premises at Bresso, a town now part of greater Milan.

Immediately after the end of the Second World War, Rivolta decided to devote his company to the production of Iso motorcycles and scooters, which buyers saw as an affordable and versatile means of getting around and offered significant commercial profits.

By 1953, he had changed the company’s name to Iso Autoveicoli and launched the Isetta, the success of which ultimately enabled Rivolta to pursue his ambition to produce high-performance sports cars. 

The Iso Grifo fulfilled Renzo Rivolta's dream
of moving into the performance car market

In collaboration with renowned designer Giorgetto Giugiaro, engineer Giotto Bizzarrini and coachbuilder Giovanni Bertone, Iso developed the Iso Grifo, a stunning grand tourer, which later led to the creation of the Bizzarini 5300 GT. 

Sadly, Renzo’s time to enjoy the trappings of his success was cut short when he died suddenly in 1966 at the age of 57.

He left a widow, Maria Aurelia Barberi (known as Marion), and two children, Attilia and Pier Attilio (known as Piero). Piero took over the running of the company, overseeing a period which saw the formation of the Iso-Rivolta-Marlboro Formula One team, managed by a young Frank Williams.

The Rivolta family sold the business in 1972, with car production ending two years later. Piero bought back the names Iso and Iso Rivolta, and after an initiative launched by the coachbuilder Zagato, a limited edition of a new sports car, the ISO Rivolta GTZ, was produced in 2019.

After success in a number of business projects, Piero and his family moved to Florida in 1980. In recent years, Pietro has devoted more of his time to writing novels and poetry, publishing eight books.

Renzo Rivolta's home in Bresso was the magnificent 
Villa Patellani, seen from Via Giulio Centurelli

Travel tip:

Bresso, situated a few kilometres north of the centre of Milan, is a charming suburban town with origins that can be traced back to the Roman era, when it was a small agricultural settlement known as Brissum. It remained a rural community until Milan experienced rapid industrialisation and urbanisation in the 20th century, when it began to attract commuters seeking a more affordable and less crowded lifestyle within easy reach of the city centre. Nonetheless, Bresso has a well preserved historic centre of narrow cobblestone streets, quaint squares, and traditional Lombard architecture.  Its oldest church, the Chiesa dei Santi Nazaro e Celso, dates back to the 15th century, while the modern Madonna della Misericordia, which was built in 1963, is shaped like Noah's ark. In 1939, Renzo Rivolta bought the Villa Patellani, a typical example of 18th-century Lombardy architecture, a reconstruction of a pre-existing 16th-century building. In 1942 it became part of the estate that incorporated the headquarters of his company, Isothermos, later Iso Autoveicoli. Part of the estate is now a community park, while one of the two surviving warehouse buildings now houses the municipality’s Post Office. 

The Basilica dei Santi Siro e Materno in Desio,
which was completed in 1744 and later enlarged

Travel tip:

Desio, where Rivolta was born, is a town of just under 21,000 people in the province of Monza and Brianza, which takes its name from the Latin ad decimum, meaning "at the 10th mile," referring to its location 10 Roman miles north of Milan. In 1277, it was the scene of a pivotal battle between the Visconti and della Torre families for the rule of Milan, won decisively by the Visconti, who would dominate the city until the mid-15th century. It is also the birthplace of Achille Ratti, who as Pope Pius XI was head of the Catholic Church between 1922 and 1939 and first sovereign of the independent Vatican City State upon its creation in 1929. His birthplace is now a museum dedicated to his life and legacy. The town is home to several notable churches, including the Basilica dei Santi Siro e Materno, which was consecrated upon its completion in 1744 and reconsecrated in 1895 following its enlargement and the addition of its dome.  

Also on this day: 

1533: The birth of philosopher Giacamo Zabarella

1568: The birth of poet and philosopher Tommaso Campanella

1901: The birth of politician Mario Scelba

1970: The birth of Paralympian Francesca Porcellato

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Camillo Castiglioni - business entrepreneur

Young man from Trieste who reached for the skies

Camillo Castiglioni
- a rare portrait

Camillo Castiglioni, a financier and aviation pioneer once reputed to be the wealthiest man in Central Europe, died on this day in 1957 in Rome.

Castiglioni was an Italian-Austrian banker who played a big part in the early days of aviation and also invested his wealth in the arts.

He was born in Trieste in 1879, when the port on the Adriatic, now firmly established as part of Italy, fell within the boundaries of Austria-Hungary.

His father, Vittorio, was a prominent figure in the large Jewish community in Trieste, where he was vice-rabbi, and there were hopes that Camillo might also become a rabbi. But after being educated in the law and working as an attorney and legal officer in a bank in Padua, where he quickly learnt about international finance and how to manage capital, it was clear his focus would be business.

Vittorio had been a rubber manufacturer and his son soon enjoyed financial success working as an agent in Vienna for a tyre maker in Constantinople.  He made good contacts both in business circles and the imperial court in Vienna, becoming a personal friend of the young Archduke Charles.

Enthused by the invention of the aeroplane, Castiglioni helped start the Viennese Aero Club and was appointed its general director. He recognised that the birth of aviation would give rise to a new industry and saw its financial potential, establishing his own ballooning and aviation company. He took the balloon driver examination successfully in 1909.

An early aircraft produced by Castiglioni's Hansa-Brandenburg
company, from a design by Ernst Heinkel

During the First World War, Castiglioni became one of the richest and most influential financiers in Central Europe.  He was the first major investor in the production of aircraft. He bought a German aircraft company, employing Ernst Heinkel as chief designer, and supplied aircraft for the German military.

Foreseeing also the opportunities presented by the growth of the car industry, he also acquired a majority holding in the Austro-Daimler vehicle company and was a significant influence in the development of the car maker BMW during its early years, employing Ferdinand Porsche as chief engineer.

But Castiglioni suffered a series of business setbacks and his financial empire broke up in 1926.

He lost millions in particular when he became involved in speculation on the devaluation of the French franc and in 1924 an Austrian bank, of which he had been president, collapsed. A warrant for his arrest was issued, but Castiglioni had taken care to acquire Italian citizenship and was safely outside the reach of the Austrian authorities.

He retired to Switzerland initially, but then moved to live in Milan, where he set up a private bank and built up a fortune again.  Although he developed a close working relationship with Mussolini, the race laws introduced by the Fascist government somewhat complicated his position. Castiglioni went back to Switzerland and later spent some time in the United States.

Josip Broz Tito, the future leader of Yugoslavia,
for whom Castiglioni arranged a loan

After the Second World War, through contacts made in the US, he returned to Italy and negotiated a large loan for his friend Josip Broz Tito, who would become the leader of communist Yugoslavia. When Tito refused to pay his commission, Castiglioni had his assets in Italy, which were worth millions, sequestered.

Away from his business activities, Castiglioni also built up a large art collection, including works by Donatello and some of the Venetian grand masters, although he had to sell much of it to refinance his business activities after his setbacks in the 1920s. He also established a theatre in Vienna.

Renowned for his dislike of publicity, he managed largely to avoid having his picture taken and few people recognised him in the street.  When he died in Rome at the age of 78, having been suffering from pneumonia, even the city's newspaper, Il Messaggero, devoted only a small space to his obituary.

He was at times accused of dubious practices in his banking activities and his life was documented in a an unflattering film in 1988, entitled ‘Camillo Castiglioni, or the morality of sharks’.


Travel tip:

The beautiful seaport of Trieste, where Camillo Castiglioni was born, officially became part of the Italian Republic in 1954. It is now the capital of the Friuli-Venezia Giulia region and one of the most prosperous areas of Italy. The city lies towards the end of a narrow strip of land situated between the Adriatic Sea and Slovenia and it is also just 30 kilometres north of Croatia. Trieste has been disputed territory for thousands of years and throughout its history has been influenced by its location at the crossroads of the Latin, Slavic and Germanic cultures.

Hotels in Trieste by Hotels.com

The Piazza Unità d'Italia in Trieste

Travel tip:

Trieste is lively and cosmopolitan and a major centre for trade and ship building. In 2012, Lonely Planet called Trieste ‘the world’s most underrated travel destination’. It is a fascinating place to visit because of the Venetian, Slovenian, Austrian and Hungarian influences in the architecture, culture and cuisine. As well as Italian, the local dialect, Triestino, is spoken along with Slovenian, German and Hungarian. Along the sea front, there are many excellent fish restaurants to try. Away from the sea, there are restaurants serving Italian, Friulian, Slovenian, Hungarian and Austrian dishes, and elegant bars line Canal Grande. Visitors can discover why Irish writer James Joyce enjoyed living in Trieste by visiting the Museo Joyce e Svevo, or what was believed to have been his favourite bar, Caffe Pirona.

More reading:

How designer Battista 'Pinin' Farina became a giant of the car industry

Vittorio Jano - engineer from Hungarian background behind Italy's motor racing success

How industrialist Enrico Piaggio created Italy's iconic Vespa scooter

Also on this day:

1737: The death of violin maker Antonio Stradivari




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