Lutz said they've have significant number of Volts in test fleets next year. McCain mentioned the Volt coming out next year, which may have been an accidental slip.
My guess is that GM is lying about 2010 and this is a lot closer, and hence all the teaser shots we're seeing. If GM brings this out sometime next year they'll simply have the media swoon. It'll be funny to have to watch Toyota try to spin things. Perhaps they'll pull an Edison and electrocute something cute inside a Volt?
(for those unfamiliar with what I'm talking about, read about Tesla vs. Edison, the War of the Currents, which happened just over 100 years ago between Tesla's AC and Edison's DC and the lengths Edison went to discredit Tesla's superior system: Wikipedia Entry on The War of the Currents.)
I've literally never been so excited by a car -- or any product -- as I've been by the Volt. And I think that's a feeling that's generally true. My dad, as I've mentioned before, hasn't been excited by much ever and he tracks Volt news all the time. He said he'll be ordering one as soon as he can. He's that interested in it.