This is more helpful, but we really won't know anything useful about true demand for a while yet. Which this article points out. Because there really aren't that many cars out there yet. Which we were expecting to be the case at this point.
In case you are thinking, oh, those greenies, they'll take any excuse.
_Four month wait_ to purchase one.
I've been suffering new car itch for months now, and waffling between replacing my Fit with another Fit (with a navigation system) and getting a Leaf (I don't want a Volt). I had new car itch for years before buying the WRX, and for years before buying the Fit, so it is unlikely that I will take action any time before the Leaf becomes widely available in 2013 or thereabouts. But I'd also be okay with getting a new Fit and switching to the Leaf after the charging infrastructure is more built out. It's an open question how well the Leaf would work for going up to Mayberry for book group, especially during cold weather.
I'm a big believer in stalling when it comes to technology (because successful stuff gets cheaper and better, and I avoid getting stuck in cul-de-sacs like the Newton). Perhaps if I wait long enough, I'll be able to buy an EV Fit.