The Challenger SRT Demon, Dodge’s drag car you can drive on the street, uses a vast collection of clever technology making it capable of some truly wild straight-line performance. Perhaps the most interesting piece of tech the Demon uses isn’t the track-ready transmission brake or drag radials, but rather, the air conditioning. Wait, what? In order to make sure the Demon’s intake receives air cool enough to make 840 supercharged horsepower, Dodge used the car’s air-conditioning system to chill intake temps. How do they do it? It actually pretty simple. Instead of merely relying on the Demon’s intercooler alone to cool air as it’s pushed through the supercharger, Dodge engineers developed a passageway for the air-conditioning system to pass into the intercooler’s closed loop, chilling the liquid coolant even further. This allows for cooler air temps, and therefore, more power. The only downside? The A/C won’t pump cool air into the cabin if you set it to cool the engine. We think that’s a fair trade-off for a sub 10-second quarter-mile time. But all of this is just a simple explanation. Let Jason Fenske of Engineering Explained lay it out in full detail right here.