[Dantilla]

Experiment 1:

Went for a drive, with my wife's hand parallel to the ground, my hand perpendicular. Results:

Wife's hand had less drag. Must be because her hands are smaller.

Experiment 2:

Sorry, I'm having a hard time renting a car from a Nascar team. I'll get back to you after Roger Penske returns my call.

Experiment 3:

I thought the most accurate way was to see the actual pressure for myself. I dismounted the tire from the wheel, and looked inside. Results:

Inconclusive.

Experiment 4:

You're lying. Once again, searching for valuable first-hand information, I removed the radiator cap to measure the tempurature. IT WAS BOILING!! Results:

Ouch!

Experiment 5:

Okay, enough first-hand experiments, so here's a guess:

A banana.