The new CAFE standard is part of a broad energy bill and includes a massive boost to ethanol producers. As the AP reports:
In a dramatic shift to spur increased demand for nonfossil fuels, the bill also requires a six-fold increase in ethanol use to 36 billion gallons a year by 2022, a boon to farmers. And it requires new energy efficiency standards for an array of appliances, lighting and commercial and government buildings.
With the negotiations over, the auto industry now needs to get all of their wonderful concepts out of the auto shows and onto the roads. Thirteen years should be plenty of time, even in the notoriously slow auto industry. They'll need to work hard, based on the number of cars we can buy today that will offer 35 mpg - not many.