Fiat makes some interesting cars, the Alfa Romeo and the Lancia.
Fiat hasn't marketed in N. Am. for some time. It holds ownership in Maserti and Ferrari, but these are made in separate facilities and Ferrari is run independently.

Crash safety tests probably will cause the small Fiat-based models to put on weight.
The Fiat 500 Nuovo is a city car that almost fits 3 small adults and one midget inside its shell. Its main competition would be golf carts.

In any case, there will be a three-year development period before any Fiat-Chrysler models can hit the road.

Now if they just produce a cheaper Ferrari---