There is another option:
The only problem is the battery energy pretty much goes away at temperatures under 50F. If you can solve the battery warm-up problem, this would also provide a nice alternative.
This winter, I stored the battery in the house on my charger. But if I had to keep the battery outside, I would add insulation, heating and a temperature regulator. As long as it is out of direct blowing, cold air, the thermal mass the battery should be able to handle 9-10 hours for the evening commute and plug-in to AC power.
Hybrids: 2007 White Honda Civic Hybrid, 2013 Fit EV
Re: Electric Cars and Plug In Hybrids
Not sure if Toyota is ever going to come out w/ a lithium prius. At least not soon. They love their NiMH batteries that are working well. They are making a LiIon EV, but only because ChevronTexaco owns the patent to the NiMH energy batteries (our hybrids have power batteries; good for short bursts of power).
I would definitely wait until there is a better solutions than what's in the market right now. I think that hybrids are okay, but they are no where near what an EV or EREV (extended range EV, like the Volt) can do. There's a lot coming in the next few years, so I'd stick with your current car and tell your dealership "No Plug? No Deal!".