The race to develop a viable on-demand air transportation is on. At last year’s CES, Bell Helicopter revealed the cabin of its vision of air taxi and at this year’s CES, the Texas helicopter maker follow up with a full-scale Bell Nexus prototype. It is more like a full-scale model than a prototype with tilting and rotating rotors. If you really look at it, the Bell Nexus is really just another helicopter, but with six titling ducted fans instead of the usual main and tail rotor combo found on traditional helicopter. But hey, if they say it is an air taxi, then an air taxi it is then.