Here is a Pinto General Lee http://www.youtube.com/watch?v=TKJL-D9etoE in action. Abusive comment hidden. (Show it anyway.)
Unfortunately for this driver 13 feet meant exactly 13 feet. Most truckers know (or think) that this height has some variance in their favor. Most clearance take in account of repaving or snow. Abusive comment hidden. (Show it anyway.)