Another angle;
After WW2, when Germany, Italy and Japan were still partially lying in ruins.. They wanted to get people back into transportation as soon as
possible, so they could actively participate in the work force. Most of the nicer, more luxurious cars came along later.
While I lived in Germany '62-'65) I noticed some interesting, 'stop gap' vehicles which were popular at that time.
Of course, no more combat aircraft were being built by Germany. So looking to rebuild, some aircraft companies decided to build basic
transportation.
Heinkle built the primary German heavy bomber, the HE 111.. So it was a natural to build a small car with a aircraft style cabin.
Here is the Heinkle.. a small car with a aircraft style cabin, this one, a sun roof model.
https://www.youtube.com/watch?v=YUAiQ2TI2HY Messerschmitt built the ME 109 fighter aircraft of WW2, a fighter plane rhat gave our P51 Mustangs and the British Spitfires all they wanted to
fight...and sometimes more. Here is the Messerschmitt 3 wheeler
https://www.youtube.com/watch?v=gx3tBUnq0kY The 2 above cars were quite popular, and I saw them often...and as I recall, occasionally on the autobahn. But much more popular than both
of the aircraft company cars, was this entrant, the BMW Isetta. BMW boughtthe rigts from Isetta, an Italian refrigerator company..then re-
engineered the whole car. Not a true 3 wheeler, but 4 wheels, with a narrow rear axle.
Here is the BMW Isetta..
https://www.youtube.com/watch?v=k0dEzY-xld8 With this car, you are assured to be "first at the scene of the accident"
They were available in 4 passenger models also.