Except it's not even Henry Ford. Prior to 2000 it was never attributed to Ford. (from your link: "There is no evidence that Ford ever said this. It only began being attributed to Ford in the early 2000s. Earlier versions of the quote have nothing to do with Ford.[1]")
[1] - http://quoteinvestigator.com/2011/07/28/ford-faster-horse also [2] - http://blogs.hbr.org/2011/08/henry-ford-never-said-the-fast/