A man was taken on a wild ride when his wheelchair became lodged in the grille of a semitrailer and was accidentally pushed down a highway for four miles at about 50 mph, authorities said.

The 21-year-old man, whose name was not released, was unharmed but was taken to a hospital as a precaution. He had been secured to his wheelchair by a seat belt.

"The man spilled his soda pop, but he wasn't upset," said Sgt. Kathy Morton of the Michigan State Police.

Officers stopped the truck — wheelchair still attached — at a trucking company. The driver didn't believe officers until he stepped from his cab and saw for himself.