Obama announced the intention to raise the requirements for average fuel economy standards.
Note this is much the same as the plan I helped develop for the Bush administration that got pooh poohed by the press. Obama wants 35mpg by 2016 and its get called historic, (we proposed a similar level by 2017, and the compromise with Congress came to 35 mpg by 2020).
The frustrating thing is that part of the defense for the increase that Obama and pundits have been using is that they are merely homogenizing standards since allowing different states to have different standards is highly inefficient.
Of course when Bush used that reasoning to block California from setting their own standards, this was roundly bashed by Obama and the media as impeding progress. The only reason different standards exist is because Obama overturned the Bush ruling.