Ive actually been in the process of reading a book about converting a vehicle to be EV, and 4wd cars are not that great- the 4wd transmission (friction), wide tires (friction), small cargo space and large wind profile just dont seem to help.

The one that I am seriously considering is the voltsporsche
http://www.electroauto.com/gallery/vp914.shtml

But its going to be expensive and quite a bit of work. The advantages are that its a light car, thin tires (less friction), and they are not that expensive (for the donor car).

Granted, I am still very early in the process and still learning, and you may very well have a lot more info about the conversion process than me, but from what Ive read so far, the VX just wouldnt work unless there was some MAJOR battery advancements that greatly reduced the battery weight.

Johnny Apollo is right- the batteries are the achilles heel for EV cars right now. After a conversion, the car ends up weighing MORE than when it was a gas driver.

Good luck, and hope I didnt put too much of a damper on your project, just throwing the little bit of knowledge I have about the subject in there.