I think this one's pretty obvious. My dad made the Earth, and I'd be pretty upset if it all went down the toilet just because we're driving cars that are far too large for our current cargo and passenger needs.

Really, I prefer carpooling or taking the bus, partly because I imagine I'm on the Road Rules RV, traveling around the country, taking on sweet adventures and just going with the flow. But on those occasions when I do need to drive myself somewhere, I'll take the sensible, Earth-friendly Prius. With gold rims.