A truck driver has pushed a wheelchair-bound man for four miles without realising it.
Police stopped the truck - wheelchair still attached - at a trucking company.
The driver did not believe officers until he stepped from his cab and saw for himself.
Kathy Morton of the Michigan State Police in the US said: "When he saw us, he was like, 'What's going on?'"
An investigation revealed the man in the wheelchair had pulled in front of the truck at a gas station and it somehow became lodged by its handles to the front grille.
As the truck sped away the man was taken for a ride down a highway for four miles at speeds of about 50 mph.
The 21-year-old man, whose name was not released, was unharmed but was taken to hospital as a precaution.
Luckily, he had been secured to his wheelchair by a seat belt.
Ms Morton said: "The man spilled his soda pop, but he wasn't upset."
Police were first alerted by a caller who told police dispatchers: "You are not going to believe this: There is a semi truck pushing a guy in a wheelchair on Red Arrow Highway."
Authorities initially wondered whether the report was a prank call until others called with similar reports.