Efficiency? MUWAHAHAHAHAHAHAHAH
Can anyone spell SUV?
If anything, I'd be saying that the US is renowned for copious waste, not efficiency. One needs only look at the motor industry to see that. The SUV being the choice of car for soccer moms in the US whilst the hatch or small car is the choice in Europe.
heheheh efficiency...
I think that the truth lies somewhere in the middle regarding imports from Europe. The market is not large enough to justify the cost of marketing and distribution and the market is also dangerous for manufacturers because of the litigious nature of said market. The added cost of insurance does little to encourage these manufacturers.