Suzi Perry visits the Rinspeed HQ in Germany to drive their latest creation, a hydrofoil car, while Ortis Deley goes for a spin in the new Sand-X dune bike in Dubai. Continuing the transport theme, Jon Bentley takes to the streets of Paris without the aid of a sat-nav to test the navigational tools of multimedia devices like phones, and Jason Bradbury straps a jet engine to the hoverboard he built in series five