We all know NASCAR is taking first steps towards the "greening" of the sport. It's planting trees and ... well, so far, I think it's just planting trees. What would NASCAR be like if it really went green? The writers at "Jimmy Kimmel Live" have answered that question with a commercial for a totally green NASCAR race in California. Late-night TV usually bores me to tears, but Kimmel occasionally knocks it out of the park, and this is funny.