Reminds me of a story of mine. It was winter and I wanted to warm up my car before I left work that night. So I started my car and I was walking away and I thought Oh my god I am so stupid someone could just come by here and take my car. So I locked it. Yes that's right my car is running I locked the doors and walked away. I didn't realize the mistake until I had to get back into my car. Oh how dumb I can be.
I can top that At least nothing happened to your car. I left my keys inside my convertible with the doors locked and the motor running. It started to rain. By the time the locksmith came to me, my upholstery was soaked because I had left the top down.