Yeah, here in Germany we usually have kinda big (30cm or so) openings at the bottom and at the top, but it’s impossible to accidentally look through those due to their position.
The side openings of the doors are usually completely closed or it’s a very small slit, you definetly cannot look through them.
I’m pretty sure scientists back then could have told you that these balloons are too small. The person(s) who drew that picture most likely wasn’t a scientist, which is why it looks how it looks.
Yeah, it would be funny if the car is so crappy that he can somehow open it with his foot, but the wife/gf part is just boring.
That’s what we Germans call Wegbier, it’s the beer you drink while walking somewhere.