While rivals roll out new models and concept cars, Fiat has little to show at the Paris auto show besides another variant of its retro-styled 500 compact car, in what is starting to look like a worrying trend for the carmaker's namesake brand. Following the full takeover of U.S. unit Chrysler, the newly-named Fiat Chrysler Automobiles has set out an ambitious growth plan focused on its upmarket Alfa Romeo, Maserati and Jeep brands.