According to the Washington State Patrol, a driver using the high-occupancy vehicle lanes on a highway was stopped when a trooper saw the driver’s only passenger was a plastic skeleton wearing a sweatshirt.

According to WSP public relations officer Trooper Rick Johnson, the car with the fake passenger was seen in the HOV lanes of southbound Interstate 405 in the Coal Creek zone.

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Johnson concluded his Twitter message with the phrase “#gottabealive,” and said that drivers in HOV lanes must have at least one human passenger.