this was a mutual deal between Tiger and GM. now that Tiger has another child on the way, he wants to be able to do more things with his family than he can now. no longer being committed to shooting commercials and helping support the brand help him do that.
GM, being in the trouble they are, obviously was looking to cut back wherever they could.
it was just one of those things that happened to work out perfectly at the right time for both sides.
Brian France said he had Kia and Hyundai lined up in case GM and Dodge drop out.
Does anyone really believe Tiger drove a Buick for anything other than commercials or courtesy cars?