I've bought a Kickr Mk III and am using Bkool app for my turbo rides. I do like it, but I am curious about some aspects of the science behind the hardware and software and whether there's an opportunity to improve them both. First question, which I think will lead to more in this thread! Is the road speed calculated using the smart trainer flywheel? If not, why not? From what I see on screen, I doubt it. Is it due to different trainers having different gearing?