AMC’s “Mad Men” may have driven off into the sunset, but now fans of the retro show will have a chance to buy props, wardrobe pieces and set decorations used in the series — including Don Draper’s suits and his 1965 Cadillac Coupe de Ville from the final season. Nearly 1,400 items from the Lionsgate-produced series will open for online bidding starting today. In addition to the Coupe de Ville (bids start at $1,500), items on the block include Draper’s Brooks Brothers suits, sunglasses and business cards; wardrobe, office accessories and personal effects for every major character including Peggy Olsen, Pete Campbell, Roger Sterling, Betty Draper and Joan Harris; Megan Draper’s wedding ring; and Don Draper’s Manhattan penthouse furnishings.