When a Car Falls Off Marina City...
In October 2006, Allstate Insurance filmed a TV commercial in and around Marina City. Based on the famous car-chase scene from the 1980 action film, The Hunter, Allstate recreated the famous fall of an automobile off one of Marina City's 18-story parking decks and into the Chicago River, below.

...It looks like this. In October 2006, Allstate Insurance filmed a TV commercial in and around Marina City. Based on the famous car-chase scene from the 1980 action film, The Hunter, Allstate recreated the famous fall of an automobile off one of Marina City's 18-story parking decks and into the Chicago River, below.
An air cannon was used to shoot the car off of the 17th floor of West Tower, early one very chilly autumn Sunday. Twice. You can view the commercial, watch several angles of the fall, and see a nifty "making-of" featurette on Allstate's Marina Towers commercial page.
This is why it's valet, folks.