I'd like to keep the joyful spirit of these days alive.
Multiple guesses are not allowed and that's a rule.
Your specific guesses ('french-electric-WWII' and 'Crosley-USA') told me that you were onto something and quite close, that's why I prefer to reply 'yes-no-yes' and 'yes-yes' instead of a misleading No - Yes.
Now, let's move along.
#1: There is a singular connection between this company and the maker of another quite known minicar...
#3: You know the basics, only the name is missing
#10:This may be hard...I have a name and a place...the place may be the key.
#11: Not that obscure. I have a nice pic of it that I'll upload in the future.
#12: Italian, not italian-engined.
#18: Italian, 1-cylinder, 0.8hp at 4000rpm...and that man is a very popular American singer.