New "Car Talks" will be assembled from archival material, the brothers wrote.

CNN: 'Car Talk' hosts retiring from hit show

See, everybody talks about how wonderful the convention speech was, but I tell people, I had good material to work with -- (laughter) -- good material.

WHITEHOUSE: Remarks by the First Lady at a Campaign Event

Everybody talks about the convention speech and how good it was, but I always say, I had good material to work with. (Laughter.) It was very easy.

WHITEHOUSE: Remarks by the First Lady at a Campaign Event