Fun roadtrip games: The alphabet game

Each of you has to find every letter of the alphabet, in order.
The first one to the end of the alphabet wins. You get the letters off billboard and road signs (you have to decide ahead of time if you want to count license plates and sides of moving vehicles). "Q" and "Z" are usually pretty hard to find, so if you know a Dairy Queen or Zaxby's is coming up, try to get to that letter. ("X's" are easy, cuz of all the Exit signs.)