The greenskin’s passion for speed and violence is known throughout the galaxy. It is not uncommon to see (from a reasonably safe distance of course) little crowds of Orks from different klans take any excuse to launch their best Gretchinz into insane races where they pilot buggies which have been slapped together with whatever is at hand. There is no need to point out that firepower and speed are far more important than the safety of the racers when it comes to the design of such contraptions.
Now you too can recreate these frantic races, pitting these crazy speed freaks against each other. Play your cards cunningly and try to manage your attacks and movements intelligently, before your rivals have a chance to get ahead. Come on, you must finish them!