This Saturday (9/6), from 9am-5pm, is the Hot Autumn Nights car show in Edmonds. Edmonds is a great venue for a car show and they do a wonderful job. They expect 400 cars this year and if it's anything like last year, there'll be a diverse group of vehicles you don't see at all the rest of the shows.
There's a street fair, restaurants, the waterfront, and other stuff going on so you could conceivably bring your SO.
Last year there were 4 Cobras. Zderf and I will be there this year.
http://www.edmondswa.com/Events/Carshow/index.html
Rich