USA (vanity) plates
Fact: A tenth of all U.S. vanity plates are in Virginia (which has 1.6 million vanity plate registrations), giving it the highest concentration of custom plates issued by a state.
In each of the 50 U.S. states, the motorists are given the option of extra-cost vanity plates, also known as "personalised plates" or "prestige plates" which are licence plates with a custom serial (sequence of letters and/or numbers). Generally vanity plates do not contain any profane or obscene messages, although standards as to what constitutes an unacceptable message vary widely among issuing jurisdictions. Namely, the state of Maine has no censorship of vanity plates at all, provided they do not promote hate or violence.