Pros at IM don't have any cars following them. The closest is a tech area, which you can also use, amd there is a roaming tech-van which does help out. as per flyguysa above, you will pay for spares after. you can't change wheels etc, or your frame. You certainly don't need extra wheels or that many spares. In your tubby bag, you want 2 bombs with head, tyre levers, multi tool, spare tube ( if clinchers ), spare tubby if tubbies. Should you cut a sidewall, use an empty gel sachet as a gaiter. (Not relevant for tubbies). Despite the references to tubbies, unless you are a top-ten contender, I would be riding clinchers regardless. The "fixability" far outweighs the little bit of rolling benefit of tubbies. This year, really strong winds etc, I rode a PRO clincher disc and a 50mm Mavic Cosmic front. Changed the front in the morning from an 88mm. Good call as it turns out. What you DO want to have in your special needs bag is a light weatherproof top for if the weather turns, some food, specifically food other than the goo and juice you will be chugging.
