It's always fun to find out what questions are going to really catch Josh's attention. In this episode, we talk about tiny marginal gains, postulate why mountain bikes are not particularly aero, follow up on the best gases to fill your tires (and why), and much more. But the question that really grabbed Josh has to do with a crazy hypothetical: how would you optimize your bike and track for an hour record attempt...on the moon? It's an intriguing question and one we're far from done with. We think you'll love this episode of Ask Josh Anything!