Last week my model 3 alerted me to a coolant valve issue. Called Tesla support and they said the valve needed to be replaced. They flatbedded it to the KC service center because I live in Omaha and its under warranty. After examination they said the underbody is scrapped and there is a hole in the underbody. They said I must have hit a rock or something. $15K to repair because it damaged the battery and has to be replaced. I am the sole driver of the car and ran basic errands that day with no visual or audible evidence of hitting something during that time. Judging from the pictures it looks massive so I am guessing I would have noticed if that happened while I was driving. I treat the thing like a baby so this is quite perplexing. Has anyone seen anything like this? Is it possible that the tow truck could have caused damage dropping it off at the service center? I dont have pictures before of the underbody because again I didn't realize or see the damage so its hard to pinpoint where the issue was. Any suggestions?