Last May, the folks down in the West Bottoms decided to throw a car show. The expectations weren’t all that great; maybe they’d get 20 or 30 cars. But it turned out to be one of the biggest car gatherings of the year. So when organizers decided to hold another one last Saturday, they thought it would be a sure-fire hit. They must have handed out 100,000 flyers. They had vendors and contests lined up. There’s no way it could have missed.