Never heard of this! Fun story. They must have left the stock ride height so that it looked like a factory van flying down the track. That thing handled atrociously for 1971 track standards. They should have dropped it off with Carol Shelby. He would have had 3” off the ground, eating for lunch, doing 0-60 in 4 seconds, and running 11 second et’s. 😄
What really got me were the camera shots along the left (non-driver) side of the van during the track demonstration. Back then, there were no suction cup Go-Pro cameras. Look carefully and you can see that the camera moves back and forth indicating the photographer was hanging out of the van and holding the camera as steadily as possible. Gutsy!