 On July 1989, when he agreed to star in a new commercial for Oldsmobile, neither he nor his son Noel would know that this would be his final performance. Here's Noel and Mel bantering inside the Cutlass Sierra in between takes. You'll hear Noel doing his father's character's voices too. Growing up, Mel trained Noel on the voices so that when the time came, he could take over for his father.