Route changes are usually harmless, but sometimes they're a symptom of bigger issues. This is it. The big score. You grabbed the cash, stole the jewel, and now it’s time to drive. You’ve got your getaway planned and the pedal to the metal. The car’s weaving through traffic, drifting around every corner. Then you see it: a St. Patrick’s Day parade standing between you and freedom. You keep your cool as you think to yourself: How do I get around this?