This two-in-one concept wheel by tyre manufacturer Goodyear can be used to drive on the road and as a propeller for flying in the sky.<br /><br />The Aero tyre was revealed at this year's Geneva Motor Show, which opens to the public today, 7 March.<br /><br />The non-pneumatic design, which does not contain any pressurised air, has a tilting mechanism that allows the wheel to transition from a normal tyre on land to a horizontal position where it functions as a propeller to lift the vehicle into the air.