The batteries provide the advantages of lighter weight, capacity, and lifespan over current nickel metal hydride batteries currently used in most hybrids.

Winding Road reports that though GM's Vice Chairman Bob Lutz commented the company's actually slightly behind schedule, the fact that the evaluation of the concept's most critical component are soon to be under way is a plus.

Our take? GM has made some big promises for the car, we look forward to its arrival.