BMW's Isetta has one door --- and it's in the front! The entire front end of the car opens to allow folks in and out; the steering mechanism is specially-designed to handle what appears to be mis-use, but it holds together very well and the entire car needs very little regular maintenance. Isetta was born into a post-WW II world where small, inexpensive, efficient and reliable were all critically-important traits, and cars like the Isetta met those goals in novel ways, many of which appear to us today to be "fun" ways. The same man who owns the Goggomobil seeen in these photos also owns (and fully-restored) this very rare and unique Isetta. These cars, known generically as "bubble cars", added a much-needed and highly-appreciated note of levity to a very tough post-war world.