The primary reason why most companies get involved in racing is because it is great adverstising. I don't think Yamaha wants to take their ad campaign that far. Most of the reason why they are there is to test out new ideas etc. Its more for research than advertising. They are a typical Jap company. They aren't into advertising and anytime they try to get involved there is usually another reason hidden in there somewhere. Look at Honda for example...I just read an article recently about how they are only active in cart and F1 to teach the rookies how to build engines. Once they get their feet wet they are off to production. They also referred to Honda as the typical Japanese company. I think Yamaha falls into the same category, Putting advertising last on the to do list.