I had something similar to this for my son. I felt the rear steer made it take to much room to turn. I also wondered if it could be modded to be suitable for an adult and held to it in part for that reason. If you convert it into a rear drive/front steer adult trike that would be cool. Are the tires on the one you saw pneumatic or are they rigid plastic? Do you know who made it? Please post more pictures if you go back for it.