That track has some pretty good bite to it .... in my set up, we'd lower tire pressure and lower wheelie bar (but I'm about 8,000 hp short of those guys).
Also that pic does a great job of showing how much movement there is in a chassis before there is one inch of forward movement (notice zero blacktracking at this point, no forward movement yet, just crushing the tire).
The picture on right is our car, the chalk mark on the ground is my mark. That's probably a 1/2 revolution turn of the tire. Also, on this particular back half, the skid blocks(rub blocks) were still under the motorplate on the bottom frame rail.
I remember the VHT looking just like that. Pour the stuff on the track, do the burn out, back it up and make the pass. You'd see trails of it behind the slicks. I think Ontario was the first track where the entire track was sprayed with VHT, and it really made a difference!