Stunt driver Ben Collins and pro racer Matt Powers drove their cars on two separate racetracks in California. The layouts of the racetracks were identical–oblong shapes of flat, bland asphalt. But in their VR headsets, the landscape was transformed into a largely gray-scale world of crashing boulders, rubble, and steaming vents, and the drivers raced simultaneously. It’s the most intense game of Mario Kart ever. Watch the full video, full of thrilling cuts to transparent images of motor oil, below: