The car will lock with people in and the card away from interior As for engine running and key card with you - no idea. I do know that with my Juke I left hubby in queue at car wash and walked off with the dog. The engine was running when I left, he drove into the car wash, turned engine off, had car washed - and then was unable to start it again. By the time he cought up with me and the dog and the key card (a chap behind him drove him around looking for me) there were another seven cars waiting, the man who gave hubby lift lost his place at the front and hubby was foaming at the mouth.
I don't think it helped that I could not stop laughing .....