A select few events are hailed as the last bastion of their respective motorsports. For motorcycle racing, it's the Isle of Man TT. For rallying, it's the Dakar. And for hill climbs, it's Pikes Peak.

Last week, Remi Bonnet visited the Colorado Custard Company in the quirky tourist town of Manitou Springs, Colorado, at the base of Pikes Peak and ordered a small cup of premium ice cream. The 28-year ...