TRAVERSE CITY, Mich. -- Early versions of the Chevrolet Volt's battery packs are powerful enough to run the high-stakes rechargeable car, but dozens of issues remain before General Motors Corp. can start selling the revolutionary vehicle in 2010 as planned, according to The Associated Press.

The Volt's chief engineer is on a tight schedule to figure out how the car will handle the batteries' weight, dissipate their heat and mechanically transfer their power to the wheels. That's not to mention the list of issues that have nothing to do with the fact that the car plugs in to the wall for recharging.