A lot of this being "green" malarkey is useless posturing to make people feel better about themselves. +1. Not just better about themselves, but superior to others. Frequently, the biggest boosters of "green" have the biggest carbon footprints as well. The irony of this inconvenient state of affairs seems to get lost in a gaseous cloud of pious environmental yak. Its a class signifier. Also, if you could drive a prius in the crucifixion position I expect that more than a few would be driven that way - provided someone could see them.