The final cut of the 9th episode of the Tesla Motors Club Podcast, featuring Chad Schwitters, the former president of Plug In America, is now available. You can watch it now on YouTube or listen to it on all major podcast networks.
Nothing. I must add that I picked it up from my valet at work then went home and found the damage. I inspected the car after picking up and all was well. Leads me to think I happened on the road but so hard to believe.
This is why I never use valet and if there are no other options, I ask to self park my car and still pay the valet fee. If not, then I don't partake in business with that establishment. Valet drivers have a track record of screwing things up.
Not sure what your post-valet check is, but it sounds like you valet fairly frequently. If that is the case, and you don't do a thorough inspection, my bet would be on the valet. Since car was not in park, sentry mode would not be activated and would not have recorded anything. Too many moving parts here for it to be clearly something that happened when sentry mode was active.
Definitely a weird shape. I would peruse around the lot/garage that you parked in looking for something bizarre sticking out of a wall or something. A piece of metal at just that height, sticking out of some concrete. What's the reason there's a valet? Is it because the garage is beat, full of potholes, and hard to drive in? (e.g. narrow). I've seen places like that.