I've been to the Kool April Nights shindig when a friend used to live in Redding.
The Friday night before the show, they block off several streets and let the participants of the show engage in a big cruise in Redding. It is a sight to see, all sorts of cars and trucks that may or may not even be street legal, running along the roads like it was 1981 again.
The show itself is great too. It is ALL makes and models but you do see some rare and unusual stuff there.
One year I saw a "White" commercial truck. I've never seen another before or since. I'm not certain but I think it had a wooden dash board and hand controlled advance for the distributor. It was there that a man told me what M G stood for. (Morris Garage).