The show's fabled team racing driver, The Stig, took the 500-HP farm machine to the asphalt. The "Track-tor" clocked an insane 87 mph, handily smashing the previous Guinness World record of 80.
Britain's biggest gearheads also endowed the behemoth with air suspension, 54" Super Swamper Bogger rear tires, and—to reign in all of those horses—four-wheel brakes.
Thanks to LED head and tail lights from an Ariel Atom, the Track-tor can be driven on public roads.
OK, but how does it corner?