Electronic can-football

I suggest an electronics sport with electronic players, a ball, two goals and rules somewhat like football rules.

Say you have a ping pong sized play ground, with borders. The players are round can sized robots.
In the first iteration of this idea the players can be remote controlled. In the more advanced iterations they can be self controlled, with or without a hive mind, robots.

This sport can be awfully fun to both play and watch. With 4 players in each team, or more players for a bigger playgound, it will allow for agility, cunning, strategy and precision. The speed should have a maximum, albeit the goal keepers can have their own maximum speed.

The speed(s) and sizes of the goals and play grounds should be iterated forth. One could also consider assymetrical cans to allow for more ball tricks.