They are real bicycles and due to the semi-recumbent position, its quite fast for the rider. That can seem disconcerting to someone familiar with a DF bike. The CF's have all the advantages of recumbents with none of their disadvantages. There is no hand-holding and no learning curve because the ride is familiar. My Rans Dynamik is where the industry has to come to with these bicycles. They are popular and not only with casual weekend pootlers.