39. BMW Isetta
Many car fans are familiar with the BMW Isetta or “bubble car.” They produced it in the 1950s, with various companies assembling it in different countries. The Isetta and all its variants became the most popular, successful microcars with an unusual wheel configuration. This vehicle has four wheels, two in the front and two in the back, yet it looks like it has three. The two rear wheels are so close together, they appear to be one wheel. Other interesting features include a motorcycle engine and one door to enter the car. In fact, the whole front of the Isetta opens to allow passengers to enter and exit the vehicle. The trunk is basically nonexistent, so drivers can only use the small space behind the two front seats.

The history of the Isetta starts in Italy where a company called Iso; hence, the name presented the concept of a microcar with a motorcycle engine. The Isetta originally had three wheels, but when BMW bought the licensing rights and changed the design, they gave the Isetta its four-wheel configuration. BMW sold the rights for production to a few small factories around the world. The Isetta was quite popular because it was an inexpensive and versatile mode of transportation during the early post-war years. Today, the Isetta is a highly-desirable classic car, which has become quite expensive for such a small, slow vehicle with unusual features and a unique design.