Prius is a POS. They might be cleaner when operating but when they are created they pollute more then non-hybrid cars operating on the road. It's just not worth it. Plus they drive like crap and look ugly too.
I can't stand those things, best to wait for a better answer. I'm sure the environment loves it too when a Prius gets into an accident and leaks all that juicy acid all over too.
Only way to help reduce costs and reduce the reliance on oil is to walk or bike, but with urban sprawl that's not really possible. Europe has everything better setup, you can walk, everything is close, and they have better public transportation systems...plus fuel costs over there are much higher then here, yet more people complain here. Interesting.