My grandfather just bought his second, he seems to like them I read an article a while back though that said when you compare the carbon footprint between a Prius and a Hummer H2, the hummer is actually quite a bit cleaner due to all the engineering resources that have gone into the Prius, not to mention disposing of that huge battery.
The verdict is still out on how long those batteries will actually last as well, and how much it will be to replace them...thats going to be a big hit on the wallet, I'm sure.
I'm with jdub...turbo diesel all the way.