Kinda unrelated to the thread but I'll share anyway.
Last week after driving for a while, I parked my car on the driveway. I was going to go to post office right away so I didn't turn the ignition off. I was going to go inside, get the letters and then go. Car was running with FULL A/C on and everything.
I entered home, got on the forum and completely forgot about the car. Lets just say two hours later I went downstairs and shut the car off.