In 1974, Evel Knievel set out to launch himself across the vast Snake River Canyon in Twin Falls, Idaho, on a customized rocket. The ramp remains today as a monument to the legendary daredevil’s daring attempt. When he was eight years old, Robert Craig Knievel attended an auto daredevil show, which he said inspired him to become a motorcycle daredevil. Over the course of his career, Knievel attempted more than 75 increasingly difficult motorcycle jumps. In the 1960s he proposed jumping across the Grand Canyon but could not get permission for the…