Promoting Public Transit while Promoting Environmentalism

I came across this great idea while reading through some new blogs.  It’s an advertisement on the sides of buses that promotes the bus as an attack vehicle against global warming.  It’s a no brainer really.  A full bus, or even a train or streetcar, is using less energy per rider than a car, even if the car was a carpool of 4 people.  This means less emissions, less greenhouse gases, less cars on the road, and less noise pollution.  More people using public transit will also likely lead to governments (local, state, and federal) giving more funding for transit systems.  This would lead to better urban development and less suburban sprawl.  It would reduce our dependence on oil.  There are a ton of reasons why people should get out of their cars and onto the bus/train/streetcar.