Gateway Classic Cars has grown into the country’s largest classic and exotic car sales company since 1999, now spanning 16 indoor showrooms and more than 90,000 completed sales. Selling on consignment means a 90-day exclusive contract, a professional photo and video package, and zero upfront fees — but also a penalty if you back out early. Buyers, meanwhile, get access to a rotating national inventory advertised to millions of monthly visitors. Here’s what actually happens once you sign on the dotted line.