We've seen cars used to play soccer, rugby, and hockey. It looks like fun. Now they're playing paintball. This is outstanding.

The recipe is simple. Take two Audi RS4 Avants, mount guns on the hoods, and put them into a huge room with obstacles. 

Then you let them go wild. 

This looks like a serious amount of awesome fun. It's also the best use of a wagon ever.

(Hat Tip to @SpaceHippos!)