Now this is some serious madness. Everyone knows the Sultan of Brunei is mad about cars, but there’s just something about being THIS mad and having the kind of money he has that will result in beasts like these being made.

This is the Mercedes-Benz S73 T AMG, a special edition made to the Sultan’s specifications. He ordered not just one, but ten of these. You basically take a W140 Mercedes Benz S-class, convert it into a wagon, slap what looks like a W140 600SEC nose on, and somehow plonk a 7.3 litre M120 E73 V12 DOHC engine into it, the very same engine that AMG builds for the Pagani Zonda C12S. This engine makes 565 horsepower at 5,900rpm and 750Nm of torque at 4,500rpm.

Other AMG parts have also been fitted, including the exhaust system, brakes, suspension, interior, and in case the Sultan ever gets bored of the sound of the V12, he can always listen to the custom fitted Sony in-car entertainment system.

It isn’t the most powerful S-Class around though – the new W221 S65 AMG makes over 600 horsepower from it’s twin-turbocharged 6.0 litre V12 engine.