This happened to me in 2000. I go to Jiffy Lube, get the oil changed. They pull it out of the stall, and I go inside to pay. I come out-no truck.
"Dude, where's my truck?", I say. After a few minutes of discussion, we determine that a young girl that just filled out a job application got in it and drove off. I called the number she put on her job application and probed her Mom for info. She used her real name and address, and it still took them a week to get my truck back, dirty, with all my stuff gone, but otherwise fine(the bastids DID use my ashtray, that pissed me off). Had to fight JL pretty hard to get them to replace all my stuff, too. Bet they don't leave the motor running or the keys in the ignition anymore, though.
p.s. Only Indians let dogs sleep in their house(That is what my grandma used to tell us).