Ferrari driver Felipe Massa, of Brazil, steers his car during the third free practice session for the Formula One U.S. Grand Prix auto race at the Circuit of the Americas, Saturday, Nov. 17, 2012, in Austin, Texas. (AP Photo/David J. Phillip)

Red Bull driver Mark Webber, of Australia, steers his car during the third free practice session for the Formula One U.S. Grand Prix auto race at the Circuit of the Americas, Saturday, Nov. 17, 2012, in Austin, Texas. (AP Photo/David J. Phillip)

McLaren Mercedes driver Jenson Button, of Britain, steers his car during the third free practice session for the Formula One U.S. Grand Prix auto race at the Circuit of the Americas, Saturday, Nov. 17, 2012, in Austin, Texas. (AP Photo/David J. Phillip)

Ferrari driver Felipe Massa, of Brazil, steers his car during the third free practice session for the Formula One U.S. Grand Prix auto race at the Circuit of the Americas, Saturday, Nov. 17, 2012, in Austin, Texas. (AP Photo/Darron Cummings)

McLaren Mercedes driver Jenson Button, of Britain, steers his car during the third free practice session for the Formula One U.S. Grand Prix auto race at the Circuit of the Americas, Saturday, Nov. 17, 2012, in Austin, Texas. (AP Photo/Darron Cummings)

Ferrari driver Fernando Alonso, of Spain, steers his car during the third free practice session for the Formula One U.S. Grand Prix auto race at the Circuit of the Americas, Saturday, Nov. 17, 2012, in Austin, Texas. (AP Photo/David J. Phillip)

McLaren Mercedes driver Lewis Hamilton, of Britain, steers his car during the third free practice session for the Formula One U.S. Grand Prix auto race at the Circuit of the Americas, Saturday, Nov. 17, 2012, in Austin, Texas. (AP Photo/David J. Phillip)

Ferrari driver Fernando Alonso, of Spain, steers his car during the third free practice session for the Formula One U.S. Grand Prix auto race at the Circuit of the Americas, Saturday, Nov. 17, 2012, in Austin, Texas. (AP Photo/Darron Cummings)

Red Bull driver Sebastian Vettel, of Germany, steers his car during the third free practice session for the Formula One U.S. Grand Prix auto race at the Circuit of the Americas, Saturday, Nov. 17, 2012, in Austin, Texas. (AP Photo/David J. Phillip)

Red Bull driver Mark Webber of Australia steers his car during the third free practice session for the Formula One U.S. Grand Prix auto race at the Circuit of the Americas Saturday, Nov. 17, 2012, in Austin, Texas. (AP Photo/David J. Phillip)

Red Bull driver Sebastian Vettel of Germany steers his car during the third free practice session for the Formula One U.S. Grand Prix auto race at the Circuit of the Americas Saturday, Nov. 17, 2012, in Austin, Texas. (AP Photo/Eric Gay)

Red Bull driver Sebastian Vettel of Germany steers his car during the third free practice session for the Formula One U.S. Grand Prix auto race at the Circuit of the Americas Saturday, Nov. 17, 2012, in Austin, Texas. (AP Photo/David J. Phillip)

Ferrari driver Fernando Alonso of Spain steers his car during the third free practice session for the Formula One U.S. Grand Prix auto race at the Circuit of the Americas Saturday, Nov. 17, 2012, in Austin, Texas. (AP Photo/David J. Phillip)

Red Bull driver Sebastian Vettel of Germany steers his car during the third free practice session for the Formula One U.S. Grand Prix auto race at the Circuit of the Americas Saturday, Nov. 17, 2012, in Austin, Texas. (AP Photo/Eric Gay)

Red Bull driver Sebastian Vettel of Germany steers his car during the third free practice session for the Formula One U.S. Grand Prix auto race at the Circuit of the Americas Saturday, Nov. 17, 2012, in Austin, Texas. (AP Photo/David J. Phillip)

Red Bull driver Sebastian Vettel of Germany steers his car during the third free practice session for the Formula One U.S. Grand Prix auto race at the Circuit of the Americas Saturday, Nov. 17, 2012, in Austin, Texas. (AP Photo/David J. Phillip)

Williams driver Pastor Maldonado of Venezuela steers his car during the third free practice session for the Formula One U.S. Grand Prix auto race at the Circuit of the Americas Saturday, Nov. 17, 2012, in Austin, Texas. (AP Photo/David J. Phillip)

McLaren Mercedes driver Lewis Hamilton, of Britain, leads Ferrari driver Felipe Massa, of Brazil, into turn one during the third free practice session for the Formula One U.S. Grand Prix auto race at the Circuit of the Americas, Saturday, Nov. 17, 2012, in Austin, Texas. (AP Photo/David J. Phillip)

Sauber driver Kamui Kobayashi of Japan, steers his car during the third free practice session for the Formula One U.S. Grand Prix auto race at the Circuit of The Americas Saturday, Nov. 17, 2012, in Austin, Texas. (AP Photo/Darron Cummings)

Sauber driver Kamui Kobayashi of Japan, steers his car during the third free practice session for the Formula One U.S. Grand Prix auto race at the Circuit of The Americas Saturday, Nov. 17, 2012, in Austin, Texas. (AP Photo/David J. Phillip)

Sauber driver Sergio Perez of Mexico, steers his car during the qualifying session for the Formula One U.S. Grand Prix auto race at the Circuit of The Americas, Saturday, Nov. 17, 2012, in Austin, Texas. (AP Photo/David J. Phillip)

Ferrari driver Felipe Massa of Brazil, steers his car during the qualifying session for the Formula One U.S. Grand Prix auto race at the Circuit of The Americas, Saturday, Nov. 17, 2012, in Austin, Texas. (AP Photo/David J. Phillip)

Ferrari driver Fernando Alonso of Spain, steers his car during the qualifying session for the Formula One U.S. Grand Prix auto race at the Circuit of The Americas, Saturday, Nov. 17, 2012, in Austin, Texas. (AP Photo/David J. Phillip)

Red Bull driver Sebastian Vettel of Germany, steers his car during the qualifying session for the Formula One U.S. Grand Prix auto race at the Circuit of The Americas, Saturday, Nov. 17, 2012, in Austin, Texas. (AP Photo/David J. Phillip)

McLaren Mercedes driver Lewis Hamilton of Britain, steers his car during the qualifying session for the Formula One U.S. Grand Prix auto race at the Circuit of The Americas, Saturday, Nov. 17, 2012, in Austin, Texas. (AP Photo/David J. Phillip)

Red Bull driver Sebastian Vettel of Germany, steers his car during the qualifying session for the Formula One U.S. Grand Prix auto race at the Circuit of The Americas, Saturday, Nov. 17, 2012, in Austin, Texas. (AP Photo/Darron Cummings)

Ferrari driver Fernando Alonso of Spain, steers his car during the qualifying session for the Formula One U.S. Grand Prix auto race at the Circuit of The Americas, Saturday, Nov. 17, 2012, in Austin, Texas. (AP Photo/Darron Cummings)

Sauber driver Kamui Kobayashi of Japan, steers his car during the qualifying session for the Formula One U.S. Grand Prix auto race at the Circuit of The Americas, Saturday, Nov. 17, 2012, in Austin, Texas. (AP Photo/Darron Cummings)

Red Bull driver Sebastian Vettel of Germany, steers his car during the qualifying session for the Formula One U.S. Grand Prix auto race at the Circuit of The Americas, Saturday, Nov. 17, 2012, in Austin, Texas. (AP Photo/Darron Cummings)

McLaren Mercedes driver Lewis Hamilton of Britain, steers his car during the qualifying session for the Formula One U.S. Grand Prix auto race at the Circuit of The Americas, Saturday, Nov. 17, 2012, in Austin, Texas. (AP Photo/David J. Phillip)

Red Bull driver Sebastian Vettel of Germany, reacts after winning the pole for the Formula One U.S. Grand Prix auto race at the Circuit of The Americas Saturday, Nov. 17, 2012, in Austin, Texas. (AP Photo/David J. Phillip)

Red Bull driver Sebastian Vettel of Germany, gestures after winning the pole during qualifying for Sunday's Formula One U.S. Grand Prix auto race at the Circuit of The Americas race track in Austin, Texas, Saturday, Nov. 17, 2012. (AP Photo/David J. Phillip)

Red Bull driver Sebastian Vettel of Germany reacts after winning the pole for the Formula One U.S. Grand Prix auto race at the Circuit of the Americas Saturday, Nov. 17, 2012, in Austin, Texas. (AP Photo/David J. Phillip)

Red Bull driver Sebastian Vettel of Germany, gestures after winning the pole for the Formula One U.S. Grand Prix auto race at the Circuit of the Americas Saturday, Nov. 17, 2012, in Austin, Texas. (AP Photo/David J. Phillip)

Red Bull driver Sebastian Vettel of Germany reacts in front of McLaren Mercedes driver Lewis Hamilton of Britain, after winning the pole for the Formula One U.S. Grand Prix auto race at the Circuit of the Americas Saturday, Nov. 17, 2012, in Austin, Texas. Hamilton will start second. (AP Photo/David J. Phillip)

Ferrari driver Fernando Alonso of Spain, steers his car during the third free practice session for the Formula One U.S. Grand Prix auto race at the Circuit of the Americas Saturday, Nov. 17, 2012, in Austin, Texas. (AP Photo/Eric Gay)

Red Bull driver Mark Webber of Australia, steers his car during the third free practice session for the Formula One U.S. Grand Prix auto race at the Circuit of the Americas Saturday, Nov. 17, 2012, in Austin, Texas. (AP Photo/Eric Gay)

Red Bull driver Sebastian Vettel, center, of Germany, the pole leader, McLaren Mercedes driver, Lewis Hamilton, right, of Britain, second fastest time and Red Bull driver Mark Webber of Australia, the third fastest time, pose for photographers after qualifying for Sunday's Formula One U.S. Grand Prix auto race at the Circuit of The Americas race track in Austin, Texas, Saturday, Nov. 17, 2012. (AP Photo/David J. Phillip)

Red Bull driver Sebastian Vettel of Germany steers his car during the third free practice session for the Formula One U.S. Grand Prix auto race at the Circuit of the Americas Saturday, Nov. 17, 2012, in Austin, Texas. (AP Photo/Eric Gay)

Red Bull driver Mark Webber of Australia steers his car during the third free practice session for the Formula One U.S. Grand Prix auto race at the Circuit of the Americas Saturday, Nov. 17, 2012, in Austin, Texas. (AP Photo/Eric Gay)

Lotus driver Roman Grosjean of France steers his car during the third free practice session for the Formula One U.S. Grand Prix auto race at the Circuit of the Americas Saturday, Nov. 17, 2012, in Austin, Texas. (AP Photo/Eric Gay)