If they can make the race short it will draw well. Perhaps have them release at 1,500 feet over the runway, race out and make one lap in like 3-5 minutes with a low pass dropping ballast on the spectators, the Saudi's are going to go nuts for that. I would too. Of course, we may see flutter and some wings getting ripped off, but following NASCAR's lead, that's what the people want anyway.
I see this working, most of the public thinks we just glide down from release anyway, no need to confuse them with the concept of soaring...