That road has claimed a lot of destruction in the last few years. I think the popularity and accessibility make it an "easy" destination and people get in over their heads. If I'm not mistaken there was a death in a UTV up there last year.
I saw where one had attempted the same acrobatics above Citico Creek (TN) on the high loop not long ago. It was stopped by a couple of small pines and was being recovered when I came by. Fortunately injuries were not serious and the guys getting it back upright and on the road were very good. Story I was told was that some folks had flown in to Knoxville, rented a Jeep off Turo and went exploring.
Everything I've seen has indicated that a passenger, in her early 20s, was ejected and sustained serious injuries. I've not read anything about the driver or what specifically caused the accident. EDIT: Per the link below it seems as though the driver had gotten out and the Jeep was parked. Must have been too close to the edge. https://www.thedrive.com/news/37023...e-after-falling-off-colorados-black-bear-pass
Yeah, I saw somewhere that it was parked and started sliding. I don't know if a ledge broke away or it rolled back or what.