Cascais Classic Motorshow, Cascais, Portugal

in Wikipedia

The Isetta is an Italian-designed microcar built under licence in a number of different countries, including Spain, Belgium, France, Brazil,Germany, and the United Kingdom. Produced in the post-World War II years, a time when cheap short-distance transportation was most needed, it became one of the most successful and influential city cars ever created. Because of its egg shape and bubble-like windows, it became known as a bubble car, a name later given to other similar vehicles.

The BMW Isetta was in 1955 the world's first mass-production 3-Litres/100km car. It was the top-selling single-cylinder car in the world, with 161,728 units sold.

BMW The BMW 600 was intended as an enlarged Isetta with more power and a more conventional four-wheel configuration.

BMW Isetta 600, showing hinged steering wheel, next to 5 ft 3 in (160 cm) boy The front end of the 600 was virtually unchanged from the Isetta, but the 600's wheelbase was stretched to accommodate four seats. A conventional rear axle was added. BMW introduced the semi-trailing arm independent suspension on the 600. This suspension would be used on almost every new model for the next four decades. Because of the increased size and weight, the 600 had a more powerful engine than the Isetta. The 600 had the 582 cc twin engine from the R67 motorcycle. Top speed was 103 km/h (64 mph).