A TV project months in the making has had a major casting change in the 11th hour.

Will Arnett, the voice of NBC’s new KITT mobile, has had to sever ties from the Knight Rider movie.  It seems his vocal cords actually belong elsewhere.

The actor (Blades of Glory) has been doing General Motors voice-over work for some time now.  Unfortunately, those who have seen trailers for the ‘80s update know the automobile featured belongs to Ford.  GM, finally realizing there may be a conflict of interest, asked the two-timing Arnett to step aside.

Fortunately for the network, another actor has been found to fill the void.  Val Kilmer will now be the one heard in the Feb. 17th special.  Assuming the movie serves as a new series’ pilot, it’s unclear whether Kilmer would continue on with the role.

As for Arnett, let’s just hope that Arrested Development film happens after all.