The first Benz automobile, I thought, appeared in 1886. The W124 300E appeared in the centennial year for Mercedes-Benz cars (counting from the Benz auto, long before his company merged with Daimler's), 1986. I always referred to my '86 420SEL as the centennial car.
Either BHO is historically challenged, or his speechwriter is and he didn't know to correct it. Or he did know, and decided not to correct it so his speech wouldn't be too complicated for his followers. ("Mass assembly --? Whassat?")