James, Beverly. “Human tractor sets big goals, has lots of pull.” Charlotte Observer 10 April 1994: 1B.
Chief Iron Bear broke a world record by pulling five tractor trailer cabs 51 feet at the Charlotte Motor Speedway. The total weight of the trucks themselves was 86,560 pounds and did not include the weight of the two drivers in each truck. The previous world record was for pulling four trucks. Chief Iron Bear, who is 36, is 6 feet 1 and weighs 335 pounds. He pulled the tractor trailer trucks, which were linked together, by strapping on a harness attached to a chain.