There have been some electric's and BioDiesels running around here for atleast 10years. I'd venture that some folks don't tell anyone, because there is talk of "fines" for people doing this and not paying the roadtax that is tied to the "normal fuels".
Maybe it's the smaller towns and high concentration of technial folks around the Pacific Northwest, but I've talked with quite a few people who are atleast talking about building their own fuel saving vehicle, growing their own fuel, or they have played with some devices to improve milage.
I admit it's a pretty small % of the population, but growing. I think the mindset is shifting faster than the actual implimentation and so when it goes, it'll really take off. I'd venture to say that 25% of the city drivers (a car to just run around town) will be electric, or atleast hybrid, in 8-10years. Remember that tons of people went out and bought new cars while the interest was low, and they are not ready to throw them away just yet. When it comes time for another large cycle of car purchasing, we'll see how many choices we have. (Timing is everything)
I think we'll see a lot more Solar activity on homes & Cars and I really do like the Hydrogen idea, but I don't have much experince in that one... yet