Well I don't think there is anyone on Planet Earth who is more in love with his car or more picky about his car than my husband. Food of any kind is not allowed to enter the *sacred vehicle,* dirty feet, etc. You get the point I guess. Anyway, I can't see that happening to him because when he is ready to get out of the car at night everything is checked. He would never miss an open window. I am not quite as meticulous about my car as he is, but I too check my windows before leaving the car as well as checking to make sure it is locked, etc. so it wouldn't have happened to me either. I can't speak for my husband but if this ever did happen to me I would never mention it to my friend. I would feel it was my responsibility to check and therefore my fault and let it go at that. I wouldn't want to jeopardize a friendship over it. "Things" are always easier to repair than relationships.