A couple new studies just released differ on how much the auto industry will recover in the U.S. One says sales will rebound to pre-recession levels of 16 million units by 2013, the other predicts sales will be 14.5 million in 2013. And speaking of car sales, a new report says Japanese automakers could lose 193,000 sales in the American market this year. Saab is aiming to restart production next week at its plant in Sweden. All that and more, plus a look at how the EPA tests and certifies engines.