I live in a neighborhood within a medium sized city. Lately cars have been entered in our area almost every night. Sometimes things are just rifled around, sometimes small items like change are taken, and sometimes larger or more expensive items. In every single case the cars have been left unlocked overnight. We went through a similar period in early fall. I'm shocked that so many people leave their cars unlocked, especially when we have recently had a string of incidents. I also feel that the high number of unlocked vehicles is what continues to attract thieves. I always lock my car during the day and overnight, no matter where I am. To me, there's just no reason not to since it takes less than a second. What's your policy?