Have Smart Cars bit the dust in America?

Last years results are in and Smart Cars made a pitiful sales showing in America. Apparently, Americans are not willing to gamble thier lives and the lives of their children with these cars with a lawnmower-type engine. To me, it was a bad idea in the beginning. Other countries have smaller roads and these type automobiles are perfect for their situation. America has miles and miles of interstate system, where 70 mph is sometimes 90 mph. Imagine a Smart Car being involved in a collison with a tractor-trailer. Who would be the winner? Question: were Smart Cars a bad idea for American drivers?