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Back in the 50's when these cars came out, my step dad brought one home. He drove it right up to the front porch and called for Mom.
When she saw it she was not impressed. She wanted a car large enough for them to take her parents (my grandparents). She was afraid dad would buy this nutty little car.
It had the engine in the back. It drove two small wheels that were set about 24" apart. The front two wheels had a wider stance, as you can see in the picture.
It was called an Isetta I believe and came from Europe.
No that is not my mom in the lifted photo!