While it's likely a non-starter legislatively, I believe the answer would be to pass a carbon cap & trade or tax system that simply prices greenhouse gases. Tha

While it's likely a non-starter legislatively, I believe the answer would be to pass a carbon cap & trade or tax system that simply prices greenhouse gases. That way we get what we want (less greenhouse gases) without proscribing a specific solution, whether it's high-speed rail, electric vehicles, or people keeping their gas vehicle and carpooling to work. If we get the incentives right, people will figure out how to minimize the increased cost in the way that is least painful for them.