Vanity plate

Irv Gordon's 1966 Volvo P1800S, the record holder for the highest mileage privately-owned car in the world, wearing a vanity plate reading "MILNMILR" ('million miler')

A vanity plate or personalized plate (United States and Canada); prestige plate, private number plate, cherished plate or personalised registration (United Kingdom); personalised plate (Australia, New Zealand, and United Kingdom) or custom plate (Canada, Australia and New Zealand) is a special type of vehicle registration plate on an automobile or other vehicle. The owner of the vehicle pays extra money to have their own choice of numbers or letters, usually portraying a recognizable phrase, slogan, or abbreviation, on their plate. Sales of vanity plates are often a significant source of revenue for North American provincial and state licensing agencies. In some jurisdictions, such as British Columbia, vanity plates have a different color scheme and design.