" WOW 250 range thats just nuts!!!!"
Naaah. 250 is do-able. You just absolutely have to have a small truck to haul the money to buy the battery pack.
Oh yeah, and a highly engineered strong/stiff/light frame. And an unbelievably low drag coefficient, and really small frontal area, and really low rolling resistance tires, and a really efficient drive train, and some other stuff I'm forgetting.
Can't wait to see it.
Don't forget, it's very easy to spend $30K or more and end up with a fine general motors or chrysler or ford product that gets 21 mpg or less. So spending 25K on a good battery pack in a slick design is not as crazy as it first sounds.
Plus, your home brew vehicle will not be designed so it's intentionally hard to work on, and wears out on purpose.
Please carry on.
troy