He had never been satisfied and never would be. It wasn't success he craved, or even fame, it was history: he wanted to crack the universe open like a ripe watermelon, to arrange the mess of pulpy seeds before his dumbfounded colleagues. He wanted to take the dripping red fruit in his hands and quantify the guts of infinity to look back into the dawn of time and glimpse the very beginning. He wanted to be remembered.
A motorcycle is a vehicle of change, after all. It puts the wheels beneath a midlife crisis, or a coming-of-age saga, or even just the discovery of something new, something you didn't realize was there. It provides the means to cross over, to transition, or to revitalize; motorcycles are self-discovery's favorite vehicle.