Fiat's ambitions could ruin it

Fiat has no share in the huge U.S. auto market. Even though light vehicle sales in the U.S. have fallen to about 10 million a year, America is still the largest car market in the world.

A recovery will probably push unit sales above 12 million, but the figure may never return to the 16 million car and light trucks that were sold in this country four years ago.