One of the coolest human-powered water toys we had the fortune to look at in 2022, the French-developed Jetcycle is a recumbent hydrofoil water bike that soars over top the water via human leg power.

The reason Ryan Madsen is part of a small but growing cadre of ski bike enthusiasts on Colorado slopes isn’t very complicated, and he has a ready answer for anyone who asks. “Because,” the 46-year-old ...