No direct experience, but Eric Buell who is one of the co-founders of Fuell has been in the motorcycle business for decades. He started Buell motorcycles which made sport bikes based on the HD motor a long time ago. It was eventually bought out by Harley, but the relationship between Buell and HD was never a good one if I recall correctly. HD eventually shut down Buell the company and Eric started another motorcycle company after that. I don’t know if or how Fuell is related to that, but Eric is one the designing the bikes, apprently. Their ebikes look cool but their electric motorcycles are especially interesting.