I do remember the case of the proud new owner of an Isetta who drove it down the sloping ramp to his garage ,said garage having an up and over door.
Proud owner then tried to get out of the Isetta via the cars opening "front " door- which was unfortunately right up close to the garage door and wouldn't open more than a couple of inches.
Now finding that he was trapped in the bubble car, he then also realised that
it had no reverse gear.
Eventually his wife came home........