The driver of a Ford Bronco SUV slammed through the front window of the Ontario Drive Test examination centre on Lambton Mall Road Wednesday afternoon.
Emergency crews were called to the scene just after 2:00 p.m.
Sarnia Fire Rescue said the driver had exited the vehicle on their own before crews arrived on scene.
One person inside the building suffered minor cuts to his arm from falling glass.
Sarnia police also responded.
Further details, including possible charges, were not immediately available.