Nooooooooooooooo!!!!!!!
The new 'Fiat 500's and 'Minis' are awful!
If you want to build a good car then do it. If you want to cash in on a marketing opportunity, make a 'cute' 'retro' piece of wasteful recycling (the first draft was one four letter word).
Imitation is the sincerest form of flattery but it is very profitable.
Having said that, have fun with your model, it looks challenging.
The first car I ever drove was a proper Fiat 500 on the island of Minorca in about 1973, I'm 6'4" but I fitted fine and it was great!