The Tesla was parked and locked unoccupied with all security features enabled. When I returned to the car the front driver's side was completely crumpled with the bodywork torn , like it was reveresed in to. I was gone about 30 minutes. The car gave no notification on the app, the car alarm didn't activate and the sentry mode did not record the incident. All the things they say the car will do. I called Tesla and was told it works 99% of the time ,(but clearly when you need safety and security it doesn't) they stated that if the car gets hit a certain way it can cause the system to shut down /reboot ,so that none of these systems work... Seems wrong that this can be allowed to be the case that not only all the systems fail, that when they do fail there's no backup or way for the car to know something is wrong. That if there is a unexpected forced reboot it doesn't tell you or acknowledge something is wrong in any way . They seem to think that this is ok . I have reported to them and they really didn't seem to care , just said the statement above about it working 99% of the time..However all the things they say the car can do ,and several reasons you think you are buying the car for with it's increased safety and security, apparently don't work at all. Now I have a 4 figure out of pocket to get the car repaired because I have no way to find the person who hit my car because the none of the cars security or safety warnings worked.