Centurion doesn't either. Same exact terms - coverage for rentals is only for cars up to $85k - which makes this completely useless for me (and I'd assume to - hopefully! - some other Centurion members...) as I mostly rent 'luxury' cars (not Rolls Royces, but things like G63AMGs, Porsches, big Range Rovers, S-Classes..) from Sixt/Avis.

I remember I looked this up on Flyertalk and there was no thread on it yet...I did send an e-mail about it to the CEO's office though. Never really heard back.