San Antonio police say a man mistakenly hit the gas pedal and slammed into a handicap parking sign that went flying through a window of a building.

The accident happened around 11:30 p.m. in the 11800 block of Spring Shadow near Babcock and DeZavala Road.

The driver was not injured, but police believe he was under the influence of an unknown substance. Police have not said if the driver would face charges.