One of my favorites:
While getting out in the parking lot at a local restaurant, I was approached by a whoman who asked what kind of car it was:
ME: DeLorean
HER: DeLorean?
ME: Yep, it's a DeLorean.
HER: Who makes them?
ME: They were actually made by the DeLorean Motor Company
HER: That part of Ford?
Tried to explain about the company be gave up after a few minutes.