GM is making a big push for Ethanol in ads run during the super bowl. Making this from corn is not a great long-run solution (Bush's notion of wood chips and grasses is actually much more viable), but if automakers begin making engines with the necessary modifications to run on Ethanol, that's a net winner for people in the long run. It's not appreciably more expensive to do so, and it opens up possibilities, so that a Good Thing.

Personally I lean more towards diesel hybrids, which I will be able to drive on Algae, or maybe old grease. But if GM really did start making it's engines Ethanol-ready, it would be a good move.