"I like this new approach to a more complete workout while going from A to B. Don't forget this is a prototype. I am sure Twicycle will improve its design, just give it a chance. The mentioned adjustability etc. should be a small problem. Important is the overall concept and this concept definitely makes more sense than normal cycling. Just ask physiotherapists about it. Also handcycling can't be a substitute for a full body bike. Handcycling neglects the lower body."