redback
Welcome to FT!
If you run a search using "select" you should see a few threads. There is a higher level,but it relates to VIP's (usually corp. presidents of companies with national contracts). For the typical road warrior,this is as high as it goes.
Basically,I get an upgraded car (very rare from premium to Deluxe)and a website with a special now and then.Better than nothing. It did,also,get me a car once at a "sold out" location.