Interesting thoughts from John Micklethwait and Adrian Wooldridge in the LA Times with The GOP's a Toyota, Dems Are All GM: "You might imagine that the GOP would be the GM Party. Conservatives are more likely to drive gas-guzzling Chevy Suburbans; liberals are more likely to try a sensible RAV4. A Hummer almost screams 'I'm a Republican and I don't care'; the Toyota Prius comes standard with a faded Kerry-Edwards bumper sticker. But if you look at the state of the parties rather than the driving habits of their members, the picture reverses."
Read it all to understand how apt the comparisons and conclusions.