Kinda what I thought too. I do have an adjustable trainer with like 9 resistance levels, thats a start. I will try the mountain bike and see if it sucks! I did put spd's on so I can hopefully get a decent workout. I will just monitor the rear tire on the road bike and when it goes put something tougher on! Right now I am tolerating 2 hours on the trainer so I need to keep my momentum up while I can!