A teenager is in the hospital after he fell and hit his head while "car surfing."

Knoxville police say two teenage boys jumped onto the trunk of a moving car on Seven Oaks Drive in West Knoxville Sunday. One of the boys, a 15-year-old, slipped off the car and fell, hitting his head on the pavement.

Crews transported him to UT Medical Center with serious injuries. The driver of the car was also a teenager. Police say charges are expected in the case.

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