Mr. Michael C. Mott

I used to hear this word as im-PAL-ah, but the last time that I saw the Chevrolet Impala car advertised on U.S. network television, I heard this word as im-PAUL-uh. I think that the Chevrolet Impala car is being phased-out, at least in the U.S. I wonder whether General Motors Company, has any preferred pronunciation for Impala. I reside NNE of Mansfield, about 65 miles NNE of Columbus, Ohio.