Pay Attention

Santa just successfully parallel parked his car next to the curb. Which was perpendicular to the curb?
a) passenger door
b) driver's door
c) back end

A woman could have won $54,000 if she got the answer correct, but she didn't. She should have paid attention in geometry. I'm going to put this question on my next test and I am willing to bet 100% of them get it correct. (54 out of 99 people in the audience got this wrong as well.)

(From the game show One Vs One Hundred)