I recently emailed the group with a registration form for the May 7, 2016 Roy J. Wasson car show. That form was last year's form, and the registration is $20 before May 6, $25 at the gate. If you already sent in your registration and $15 (I did!), just bring a fiver with you to the event.
Visit the car show website.
Thanks to David McNeil for pointing out my error. I highly recommend the group dismiss me as the website admin and give me a generous severance package.