Police investigate after a car is seen driving down the steps in front of the Philadelphia Museum of Art.

Cellphone video posted on YouTube shows a black BMW convertible slowly making its way down the Philadelphia Museum of Art steps made famous in the movie "Rocky."

CBS Philly reports that it is unknown how the car got to the top of the steps, but the video shows at least five other cars lined up at the top. A crowd of people laughed and cheered the drive on after he made it to the bottom and then sped off.

Police say they plan to review surveillance video to try to find the driver, who would face citations for several offenses.