I listened to it on the radio. I thought Obama grilled him and Romney sounded like some guy trying to think of good things to say to win back his girlfriend after she dumped him.
You're right that the wheels spinning will do nothing (just a trick) but the plane generates it's thrust from the propeller which isn't attached to the wheels. If the plane's engine is revving up, it...
All I was saying is that the way most people think about it is as if the plane was a car and the force was transfered through the wheels. A plane generates it's force through the propeller.