I agree, I had my first nosedive today and I too was going up hill at a good clip. Strava said I was going 21.9 but I doubt that. I didn't feel any pushback either but then again I don't know that I ever have. It would be nice if there was some other feedback or indication that we were going beyond the capabilities of the Onewheel. I can't rely on the phone app as the Bluetooth connection keeps dropping.