Not exactly what this has to do with driving (well, except for the slow
introduction of hybrids).

OK, the US can pass Kyoto only when the third world manufacturing
centres (China, India, Malayasia, Indonesia, and so on) sign on, and
enforce it too. Until then...
(heh, wouldn't it be cool if the widespread adoption of diesel hybrids
(low green house gas producing, but, alas, right now high particulates)
brought down the US emission levels...)