Racing in giant robots is going to become a thing in the future. Take Prosthesis for instance. It is a 14ft, 3500kg exo-bionic robot that can carry competitors at speeds up to 19mph. It simply responds to the movement of the operator at the center. This giant robot is powered by a battery that lasts up to an hour depending on the speed.
When we will have leagues for these giant machines remains to be seen. You can catch updates on it from CES on Instagram and YouTube at this time: