The key? Ah, well I'm very glad you found it! It fits this car right here:

They're trying to sell it, but don't pay any attention to that. Just get on a plane, fly to Milwaukee, take a cab to Wolksi's on North Pulaski (kind of behind Brady Street), have a few Schiltz beers and then start her up and drive her home. Pick up a few Slim Jims in case you get hungry on the trip back. If anyone asks you any questions, just tell them Jon said it was ok and that you were picking it up to take it back where it belongs.