I REALLY hate to hear about this and more so, I really hate to SEE it in real time. I have had my car hit twice by shopping carts.......one time the damage was paid for by the lot's owners.........the other by me. In any case, I thought I would put my $0.02 in and say that this video is NOT sentry video. When you enable sentry mode, it does not start recording immediately. It only starts recording video that will not be overwritten when it senses "an event" such as someone near your car and/or slamming or banging of the car door and/or window. While the impact of the cart on your car should have probably initiated the start of a sentry mode recording, the sentry mode video (if reviewed) would have not shown the impact, but would have shown the cart there after the impact. The video that we observed is the regular dashcam video. The difference being that dashcam video is always recording and will be overwritten in an hour whereas sentry mode video has to be initiated by "an event" and will NEVER be overwritten. Semantics I guess, but just trying to be clear on what we are watching. Luckily, you watched the dashcam video before it was overwritten. Should you have come back to the car an hour after the cart impacted your car, you would not have seen the cart actually impacting your car because the dashcam video would have been overwritten and any sentry mode video (IF it was initiated by the impact) would not have shown the cart first impacting the truck and then your car.