One of the best and safest recreational activities when you find yourself locked in traffic is decoding the names encrypted within the endless sea of technicolor vanity plates in front of you. In many US states across the nation, the creativity of some motorists to come up with eye-catching, unforgettable number-letter combinations seems limitless. But appearances can be deceiving. As Guardian reporter Mona Chalabi reports, many federal courts have tight restrictions on what may and may NOT appear on a license plate.
