Six big collector car auctions concluded last weekend in Scottsdale, Ariz. While the extravaganza was anchored by the massive 1,400-car Barrett-Jackson sale, five other sales took place around the same time, all within a 40-mile radius. And in addition to the usual Corvettes, Mustangs and Chevelles, there were some interesting oddballs that crossed the block. Here are five of our favorites: