I have been riding a Halfbike for two years and really enjoy it. I used to run marathons and use the halfbike to get in mileage with less stress on my knees. The learning curve is real as halfbike is very different than riding a bike, so be patient. Once it clicks for you, the fun begins. As I write this review, I am on vacation in Florida turning heads as I ride my Halfbike3 along A1A.