2012 Audi e-tron Review and Prices

Despite recent technical advances, batteries are still pretty darn heavy and thus an obstacle to making EVs as weight-efficient as conventional cars. The 2012 Audi e-tron concept proves the point. For all the expensive pound-paring measures, it tips the scales at a fairly hefty 3,527 pounds, of which the batteries account for nearly a third. This helps explain why Audi put the batteries amidships