VERRRY COOL!
Way back in the WayBack I had the next model up--the BMW 600. The 600 was a "luxury sedan stretched version" four seater version with a rear passenger door on one side and a wider rear wheelbase. The front end had the same "refridgerator door" and frog-style headlights. Power was supplied by a BMW 600 cc two cylinder air-cooled motorcycle engine.
I loved that car. In low gear it would just about go up a wall. The problem was that it attracted almost too much attention. If I left it parked on the street, when I returned it was covered with notes offering to buy it. When I moved onto the campus I would find it turned upside down about once a week--college pranksters. Eventually all that upsidedownedness caused the battery to leak fluid through the rear seat and ate out the headliner.
Service was difficult because there weren't many places in the midwest that had any idea what the thing even was. Eventually, I sold it to a collector who restored it and it is now in a museum somewhere.
I sure would love to have that car now. The Internet would offer a lot more options for parts and maintenance.
This one is exactly like my old one...
http://www.microcarmuseum.com/tour/bmw600.html