Imagine approaching 70 and wondering how many years of hiking you have left? Five, 10, maybe 15? Now imagine you’ve only reached the midpoint in your hiking career, that you could easily have another 70 years — or more — of hiking in you. Jerry Kroll has long been a cutting-edge kind of guy, dating back to his sustainable clothing venture in the late 1980s to his ElectraMeccanica Vehicles Corporation, which has produced a single-occupant electric car — with three wheels no less. Now, Jerry is...