You might declare that global warming and energy insecurity, not to mention urban sprawl and pollution, have intensified the sin of indulging one's motoring desires. And I would not argue with that point. You're right. I am a bad man. But over the long term, if you want to develop a new transportation and energy policy, you'd probably want to err on the side of assuming that people won't change much. And it is human nature to like to be empowered.