Buddy works at a large local dealer, 2yrs ago they had a new Malibu stolen. Sad thing was they had so many in the lot it was literally 3 months later when they had a customer ask to see that one because of the color and they couldn't find it. They had to look back on the security cameras to the first Sunday it was on the lot and seen someone stole the car right in the middle of the day. Just walked up, opened the door as it had been unlocked, and drove off. Almost like they had a key for it. Sounds like an inside job to me, but who knows.