Chevy S10 Electric motor running on 12V

Advanced DC 9" motor in Chevy S10, running test on one 12V battery. Insurance company says they'll insure the truck as any other car would be! The final price of the trucks conversion required a line of credit on the house mortgage, went with $9000 worth of lithium batteries. Way better than the lead acid ones at a third of the weight, and last alot longer, four years so far (as of Apr 2013)