So a co-worker of mine was at the counter when a couple tourists from America walk in... They inquired about a couple things and suddenly changed the subject. They were curious about the beepers we have on street corners to alert blind people when it is safe to cross the street. The woman asked why we had the things that make a chirpy bird sort of sound on the corner. He explained that it was to let blind people know when the light changed. She then exclaimed very loudly in a thick southern drawl, quite seriously ""Oh my god!, they let the blind drive!"" It took all our wherewithal not to become incontinent with laughter.