Future

What: GM's most significant effort to date to move past gasoline -- an extended-range sedan with a 230 mpg city rating

When: Currently scheduled for the 2010 model year, but the estimated production date has shifted many times during development. GM now says the vehicle will go into full production in late in 2010

Price Range: Pricing for the 2010 Chevrolet Volt has not been finalized. The most recent estimate places the price at $40,000, with a $7,500 federal tax rebate available after that price