In 1976, at the age of 18, I raced professional motocross for the last time at Unadilla, New York. I then hung up my leathers and concentrated on academics. Every vestige of my motorcycle life disintegrated to dust as college, medical school, internship, residency, fellowship, job, and family consumed decades of my full attention. Motorcycles became nothing but a file of old memories. What had become of the “me” who found so much joy in speed on two wheels? I had always felt most alive when my brain was bathed in adrenaline.