A Japanese inventor has designed a robot that can change from robot to vehicle in seconds – and can even offer ‘piggy-backs’ on its shoulders.

Looking a bit like Optimus Prime, the lead character of the Transformers films, the robot is even prepared to battle, especially when it takes exception to sharing the stage with a smaller robot.

The three-foot high creation took part in the Robo-One competition, which aims to drive the creation of humanoid-shaped robots.