A light bulb burned out in my room and I haven't replaced it. That must count for something.
But seriously, 4 words: We need more E85
Flex Fuel vehicles are easy and not very expensive to make. They've been out there for over 7 years. But there are still very few stations to buy E85 at. In all of California, there is one.
With how much great farmland we have, I can't figure out why we don't grow more corn. As stated above, it does seem to be working for Brazil. I believe I heard over half their cars run on E85.
Also, if anyone has an old diesel Mercedes (or similar), hang on to it! You can convert those things over to run on waste vegetable oil.
Back on the topic of lighting, many cities now require fluorescent in any new construction or remodel. There's nothing stopping people from putting back in incandescent bulbs (if they fit in the fixture) when the inspector leaves, but when the inspector is there, those bulbs better be fluorescent.