So, reportedly there is good CCTV footage of this, and it’ll get posted online once the insurance company is done with it. The user at the time kept repeatedly slamming their car back and forth under the machine until they caught it with the top brush down and backed into it hard, tipping the whole wash gantry over and crushing the roof of the car as it came to rest. Amazingly, the Istobal machine looks pretty much unscathed other than the wire/hose guide getting torn off the wall.
Wanna bet this was a GMC Yukon or a Land Rover? Those seem to be the peak derpcastle vehicles around here.