If the performance was decent, I think it might be something worth doing. The worlds best performing hybrid might be the ticket that will get the green movement going. I think the EV only plug in mode is pretty cool. If the battery dies, then you can fire up the IC mode and come home or find a charging station easily.
I lived with an early experimental EV a couple of years ago for a few weeks as part of a test and it was funny. My wife turned on the heater, and it ran out of juice, I limped home going about 10 mph the last few blocks. Then it took two days on the home charger to get enough juice to take it back to work.