Even though it does look suspicious, the reason I doubt it is true, is that the circle of implication becomes much larger, and as such the risk is higher. It is likely that this sort of thing will have to be done with the knowledge of the bike manufacturer, and they have much more to loose than the athlete. They simply cannot risk such a thing, cause they will be putting their whole business on the line. And if they did take such a risk, well then they have made a very costly error of judgment. If a guy dopes, he stands alone (mostly), even though other may have known. Even others higher up the chain may get caught, but they too are mostly individuals. When a motor is used, a whole company may go down with the athlete. I cannot see a reputable company taking such a risk (although stranger things have happened, so will not bet my life on it). If it was done by one of their riders, without their knowledge of it (by some 3rd party), then the situation is slightly different, but it would still be in their own interest to get to the bottom of it and clear up the facts with the particular riders implicated, because it will undoubtedly reflect on the manufacturer indirectly. This is one case where we don't want to sing the song "make the circle bigger"
