Fully custom Thor24, the supercharged “Holy Mother of Metal” was sold at a specialty auction for $12 million. This semi was put together by Mike Harrah, Tim Spinks, and Paul Abram and has been named the most outlandish semi-truck ever built. Some of the specs of the truck include; it’s 44 feet long, weighs 32,000 pounds, has twin V-12 Detroit Diesel semi-truck engines with 12 superchargers, has 3,424 horsepower, has a 1,500-watt per channel audio system, and seven movie screens in the cab.