Now now Andrew, assuming the SAU Show and Shine was cross-promoted on other forums, this isn't that much different to inviting people to drive an average of say 1.5 hours up to the Central Coast to have the honour of looking at a bunch of Skylines. Sitting still. In a car park. Is it? (EDIT: apparently the S&S wasn't really promoted much elsewhere, so you can obviously disregard the above - still, there's no harm in them letting people know about it, some might want to make the drive if they have nothing better to do on the day, and as said, there is the possibility of participating if not all slots get filled...)
Sounds like not only will you get the opportunity to check out some nice cars in static displays, but also to see some cars circulating. If what you're trying to say is that you don't rate rotaries or something, then you could just come out and say it...