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Futility Closet:

Parking was already a problem in 1906, so Swiss inventor Martin Fischer offered a car that you can drive right up to your apartment:

The width of the frame is smaller than the distance of the wheels. That distance amounts to at most seventy-five centimeters. Consequently the motor-car can pass through doors of ordinary width and up staircases with such ease that even persons residing on the upper floors of ordinary dwelling-houses will be able to keep such motor-cars without the necessity of providing special storage space on the ground floor.

It’s built low to reduce the risk of tipping over when traveling around sharp curves. But what happens if you meet someone else on the stairs?