The Mickey Thompson Entertainment Group (MTEG) was a sanctioning body for an American short course off-road racing series that took place inside stadiums.
[1] Mickey Thompson raced desert trucks in the SCORE International series.
"[2] He reasoned that he needed to bring the excitement of desert racing to a wider audience.
The body also sanctioned motorcycle races called Supercross.
The concept of stadium off-road racing was revived with the creation of the Stadium Super Trucks in 2013 by former series champion Robby Gordon.