For some reason the default camera orientation is to the rear of the car, but the tornado is in front of it. That means you need to adjust the camera orientation (using the four arrows visible in the upper left hand corner of the screen once you run it) before you'll see anything at all. Once you get the camera looking forward, you'll see the funnel form, touch down, cross the road in front of them, and then pass by on their right. Very impressive, and these guys are totally nuts!
Question for anyone with tornado experience: the funnel, near the ground, is distinctly brown. Why is that? Is it just dirt and dust being thrown around? Or is their something else going on?