eco-friendly taxis

there's an environmentally friendly taxi service in town.
http://www.eco-limo.com/
but seriously people $90 to Dulles in a prius?? and what's with the chevy suburban - are you telling me it's a hybrid? probably runs on ethanol, which destroys more rainforest than mcdonald's cows. why would we pay more than a regular cab (especially when the new DC meters come out)? we'll have to see how this pans out because for the regular drunk arlington douchebag crawling home from the bennigan's in reston, not sure he'd want to shell out extra cash for his conscience.
but then there are these guys:
http://www.envirotaxicab.com/
maybe i'll start driving for them...