A typical, and in my book unimaginative response to An Inconvenient Truth is along the lines of 'My next car's a hybrid'. Other commentators wax lyrical about 'a Prius in every garage'. And so on. Sorry, but I find it hard to buy a notion of the car as a route to ecological nirvana.
It's not very high tech, but the best (and easiest) way to be green(er) is to consume less.Be generous. Use your car less.
Kitchen Linker agrees.