In 2009, when the Brammo Enertia first came out, a fellow from the East Coast flew out to the factory in Oregon and purchased one of the first Enertias sold. His plan was to ride it down to So Ca and then on to home, bumming electricity along the way. Unfortunately, he never made it out of Oregon. Near the CA border, while he was riding at night on I-5 he got rear-ended by a high speed SUV driver and was almost killed. He spent months in the hospital recovering, but finally was able to return home and he is now fully recovered from the accident. I have no idea if he ever got back on a motorcycle.
A Cannon Ball run might be fun and exciting to hear about. It might also make a great movie, like "Long Way Around", but if it was me, I would try to stick to Route 66, instead of I-80, when crossing the country on an electric motorcycle.
