Plenty of lessons from Fiat's U.S. stumble

It's easy to look at Fiat's paltry sales in the U.S. and argue that the Italian brand so beloved by former Fiat Chrysler Automobiles CEO Sergio Marchionne is simply a prominent victim of consumer trends away from small cars, or that its return to the U.S. in 2011 was ill-timed against then-falling and now-stabilized fuel prices.