This is off-topic, but I could not resist. Leaving the car running happened to us in 1961. We had a 1956 Nash that had a Packard engine. You just could not hear that engine running at idle. At all. Even as a youngster with great ears, it was just plain silent. My mother took us to the zoo. She parked, got everything ready, and we got out and spent the day looking at the animals. Nobody locked cars then. We got back to a note saying that she had left the engine running, and that the keys were at the entry booth.Could my wife have accidentally left the car running while she traveled on the airline? She drives a Tesla which auto shuts off. I wasn't there on this trip.
So yes, it's possible that your wife left the engine running. But at Detroit, I think fuel theft is more likely.
So has anyone found a locking cap for a Pachy?