Back in high school (almost 20 years ago, so possibly Americans didn't travel as much) a friend of mine was going on exchange to the US. Before he left, we got hold of a laminator and the school's laser printer, and made him a 'kangaroo driving licence'. His mission was to try to convince an American than the licence was real, and that he actually rode a kangaroo to school and work. He succeeded on his first day in the states, and claims he had around about a 1 in 3 success rate. Then again, he was in rural Texas, so I'm not sure how representative that would be