During summer vacation car rides as a kid, I remember the thrill of seeing an unusual license plate from a faraway state. There were 50 possible plates to see (plus D.C.) each with distinct colors and often the state motto. Today the game of license plate bingo has gotten incredibly complex. By my count, there are currently 8,291 different vehicle license plates offered by the 50 states and the District of Columbia. States now offer a vast menu of personalized plate options for a dizzying array of organizations, professions, sports teams, causes and other groups.