Goodyear, the long-standing American tyre manufacturer, has finally unveiled prototypes of a design that’s been decades in the making – spherical tyres. The Eagle-360 is an incredible feat of engineering and could well be the tyre that carries us into the future of self-autonomous cars. And when we say ‘future’, we really mean it. This tyre is so advanced, engineers are still working out how exactly it’s going to fit modern vehicular incarnations. The tyre…