Figure anything you want - most folks wouldn't buy a car that sold for $40K and needed a $1700 minimum (plus tax & labor) battery replacement every couple of years. Which is probably why GM didn't build the thing by the millions.
Plus there's probably a good reason GM swapped to NiMH batteries (and a hopefully a good reason McCaine is offering $300 million for a decent electric car battery ;>)...
What we need is easing of regulations/laws that would allow immediate re-importation of the GEO Metro/Suzuki Swift twins ,, the Mazda 121/Ford Festiva/KIA Pride triplets and so many of the quality Japanese micro cars ...
I would have to find the book where it's referenced (still packed in a box, after a recent move), but there was an American engineer who built a VW/Porsche-based car 20+ years ago (IIRC), that did 0-60 faster than you you could choke on your jalapeno milkshake, and got 60+ mpg. Didn't cost much to put together, but I'm sure it would be completely illegal now due to various safety/air pollution/misc-idiotic-fed regulations...
Crap - my first double post in 10 years. My sincere apologies...