There are a few pics online…nobody has really nailed it. The rear fenders arenĀ“t long enough originally and thereĀ“s that odd ‘bustle’ at the back which you canĀ“t just leave there, hanging out in the breeze. I lengthened the rear fenders til they reached the back of the bustle and it gives you a chance to avoid too much of a stubby look.
The Topolino is a much smaller car, but manages to have a nice coupe profile, so it must be possible.