When it arrives on the market in 2012, the Tata Nano EV could well be Europe's least expensive EV, priced from well under $10,000.As shown here, the Nano EV shares its super-polymer lithium-ion batteries with the Indica Vista EV, Tata's first electric vehicle.We will progressively introduce electric vehicles in all relevant markets."Tata expanded its foray into alternative fuels at the Geneva