Don picked this car up in the fifth season and drove it until the penultimate episode. These are the wheels he (spoiler alert!) drove across the country, got repaired in Oklahoma, and ultimately gave to a kid working at the motel before making his way by bus to the Bonneville Salt Flats in the final episode. At the time of writing, bidding had reached $25,000 with four days still to go.
Cadillac first used the de Ville as a trim level on the Series 62 before spinning it off into its own model line. 1965 was the first year of the third-generation de Ville, stretching a massive 224 inches (over 18 and a half feet!) long. Powering over 4,600 pounds of personal American luxury was an equally massive 7.0-liter V8 that drove 340 horsepower through a three-speed automatic transmission.
The name wasn't retired until 2005 when the final DeVille (as it was styled by then) was replaced by the DTS, which itself was shorthand for DeVille Touring Sedan. Cadillac produced the last DTS in 2011, finally putting to rest a name that had, in one form or another, been used since 1949. Few cars had the kind of presence that the third-gen Coupe de Ville did, though, and Draper knew it. Or at least the show's producers did.