30+ mpg for cars in 2012?

I have been hearing that in 2012 all new cars being sold in the market have to have 30+ mpg in the United States. My question is: Will they be able to do this with trucks and suv's? What about sports cars? I always hear that car companies have the technology to make cars that could run 50mpg. No hybrid. Though... show more I have been hearing that in 2012 all new cars being sold in the market have to have 30+ mpg in the United States. My question is: Will they be able to do this with trucks and suv's? What about sports cars? I always hear that car companies have the technology to make cars that could run 50mpg. No hybrid. Though i find it hard to believe because if you look at the escalade hybrid it only goes 20mpg.

Anyways, do you think they will put out a 30mpg truck and suv?
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