In the 1960s, you could buy rocket-powered turbochargers.
This advertisement is for Turbonique's liquid-driven supercharger. It was basically just a turbocharger, but instead of the turbine being spooled up by the engine’s exhaust gasses, it was spooled up using a rocket engine. It was every bit as insane as it sounds. And yet, somehow this was one of their least terrifying products.