It is to bad someone can't do to the epa what the epa done to emd :P I know in the marine business cat. pretty much took over where EMD was king it was a sad day to see it come to this :( I have very little use for a caterpillar except to spray it with bug killer :-D Guess i feel this way because i make my living rebuilding EMD engines in the marine industry. One thing for sure Cat. will never build a engine that can run with a EMD
I can't say I love the EPA (I think they're an overweight political beast that's more of a block to actual environmental improvement than anything else at this point), but the reality is there's plenty of room to improve rail diesels, and GE picked up on that. And EMD didn't. Right now, a new prime mover design is pretty much out of the question - that's a multimillion dollar, multiyear effort. Not something I'd expect now.
Sure the GEVO is cleaner than EPA regs, I bet GE can and knows how to get a LOT more (less?) out of it. Hey - GM had the world's biggest database and the industry's top brainpower (say what you want about their cars, GM still leads just about everything in automotive research). They didn't throw it at a prime mover, and now the 710, etc are basically on death row.
I bet if GM wanted to go head to head with GE on the emissions front, they could have REALLY turned up the pressure, and the public (and RRs, for that matter) would have reaped a huge payout in the form of better, cleaner rail diesels.
I suspect GM saw the writting on the wall for EMD, though, and decided not to throw the resources at them. They must have been looking for a buyer for a long time...