Here's a comic story you might appreciate. My 20+ year old son had a bicycle with a flat tire. He repaired the tire, but he didn't have a pump to pump it up. He threw the bike in the back seat of the car and drove to the nearest convenience-store/gas-station to use their pump. He pumped up the bike tire, then hopped on his bike and rode it home and forgot about the car.

My wife and I were away in our other car (car #1) at the time. We came home and noticed car #2 was not in its usual place, but that didn't alarm us; we figured our son was off someplace with it—no problem. Next morning, we noticed son was home in bed and still car #2 wasn't visible. Again, we weren't alarmed. We figured he had parked around the corner. He sometimes has to do that because he comes home late and all the parking spots on our block are filled.

Finally he woke up in mid-afternoon. (Common occurrence.) Conversation went like this:

"Where's the car?"

"I dunno. I didn't use it yesterday."

"But you were out when we got home."

"I used my bike."

Consternation. Puzzlement. Think, think, think. "Hey, I thought you had a flat."

"Yeah, I fixed that."

Puzzlement. More thinking. "But I thought you didn't have a pump. So, how did you fix it?"

"Well, I … (pause, ponder) … Oh, yeah, I guess I did use the car."

We got the car back, after it had been towed.