@TheRef and I met an Aussie friend last night. He told us he had used a valet service to drive him home in his rental car awhile ago. The young male driver was speeding (confirmed at 130KPH via the rental car GPS) and he 'self skidded' on the PIE and the car was written off.
Our friend is now out 15k as the valet driver was not insured and has no money, the valet company fine print disavow any damages and the rental car was not insured for any other driver apart from our friend.
As he put it "I could have caught a lot of taxis for $15,000 and left my car in the car park over night". A very frustrating event given he genuinely thought he was doing the right thing.