An Arkansas auto parts store clerk was surprised when the truck belonging to the customer he was helping crashed through a window -- with a dog at the wheel.

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Michael Henson had left his truck idling in the parking lot of O'Reilly Auto Parts in Springdale Sunday so he could show a store worker how his throttle was sticking. Moments later Henson and clerk Josh Hopper were shocked as they saw Henson's dog drive his truck straight through a plate-glass window, the Springdale Morning News reported Wednesday.

"The customer had a problem with his throttle sticking. He'd left the truck running -- I guess to show the people at O'Reilly's -- and the dog jumped over and knocked the truck into gear," said Sgt. Billy Turnbough of the Springdale Police Department.

"The guy said he was standing there, looked up, and saw his dog driving his truck through the building."

No one was injured in the incident.