The fastest I ever went on a bicycle was 56.5 miles per hour (according to my bike computer). That was going down a long, steep hill racing some friends. That was also on a road bike back in the day when almost nobody wore helmets. If you’ve got a ten dollar head buy a ten dollar helmet; if you’re 20 years old you don’t need a helmet, you’re invincible. What is it about us humans that we like to