I happened to stumble across this informal whoever-wants-to-show-up car show last weekend while heading to the beach. The parking lot was full - evidently they have it every Saturday morning from 6-9am or so. Not organized - just show up and park. A couple of good videos on youtube - search for donut derelicts. The one that starts out with a feller driving is the best, but you have to skip over 1-2 minutes to get to the cars.