Virgin pull out for environmental reasons, but still keep their trains and planes going. NOw I dont know about you, but I think fleets of trains and planes make more pollution a year than running 3 cars (including test and spare cars) in 18 races and some test sessions.
Mosley has got it wrong, F1 is meant to be about what is technologically possible, to be the cutting edge, not about road cars, so they should use the most powerfull fuels and engines available, not be restricted to tiny V8s. If ethanol is more powerfull, then it should be used. The people in charge are loosing it, they are trying to make it more boring and restrained, and limiting what teams can do, but at the same time, they are trying to make it more exciting again. In my opinion, if a team spends millions entering F1, it should be able to do whatever the hell it likes with development, forget the environment for a minute, this is racing, not an economy run.