(October 13, 2016) WALWORTH, Wis. — Mecum Auctions, the world’s largest collector car auction company, will be back in action for its sixth-year running at the Kay Bailey Hutchison Convention Center in Dallas this Nov. 2-5. The estimated 1,000-car lineup will draw buyers, sellers and spectators from across the United States and will consist of a wide-ranging variety with names like Hemi Cuda, Shelby, Yenko, Porsche, Ferrari and more all on the docket.