A 4,000 horsepower Peterbilt truck named Thor, the 'most powerful big rig ever,' just sold for $13.2 million in Saudi Arabia

Thor is powered by two 852-cubic inch V12 diesel engines.

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The crew cab semi is 44 feet long.

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The entire bottom was replaced with chrome and polished aluminum components. This includes the driveline, brakes, and frame parts.

Chrome bits also decorate the spoiler, sunroof, panels and decorative air horns.

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This imagery continues on with the the tires, which have chrome rims and hubcaps that are embellished with spikes.

There are even custom chrome Norse god trim pieces and allusions throughout Thor 24.

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The Thor motif also continues to the back of the truck, which is adorned with a Thor mural that has an aluminum sculpture of its name.

It also has what the auction house calls a "1933 Ford-style tribute grille."

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“It might be easy to dismiss this sort of attention to detail as frivolous, but backed by the actual performance, it simply proves the craftsmanship and vision evident throughout this project,” the auction house wrote.

The truck has hookup and rigging parts in place, which allows it to still be functional.

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The interior is made up of leather that has been custom-stitched and a wood-rim steering wheel.

It also has carved skulls, LED lights, and custom paint to add more pizzazz.

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There is even a 1,500 watt-per-channel stereo system and seven video screens, one of which is 40 inches.

Thor 24 also has the largest engine ever placed in a street-legal vehicle, according to the auction house.

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There are 12 superchargers that give it its 3,974 horsepower, 130 mph reach, and 1,704 cubic-inches of displacement.

Its 24 cylinders make Thor 24 the most powerful semi ever built, according to the auction house.

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The 32,000-pound truck also comes with four 12-foot drag parachutes so it can stop, too.