It had been built in 1953 by a firm known as Iso in Itally and yes it had been extremely popular in Europe during the 50's and also the beginings of 60s, a period when individuals needed inexpensive transportation in short distances. It had been the very best city car at that time. The BMW Isetta became in 1955 the top selling single cylinder car exceeding 161,000 units sold.
The Isetta might reach 50 km/h (31 mph) in 30 seconds and also the top speed had been close to 74 km/h (47 mph).