Many concepts are released into an eternal state of engineless purgatory; one where we are left to only ever imagine what they might have sounded like. Unfortunately, if they actually do make it into a fully-operational prototype, it’s usually not the stellar machine we had imagined in the brochure. But the Peugeot Onyx might just change your mind about operational prototypes; it’s so sophisticated, you need to manually warm the fluids and components before starting it! This includes the gearbox and drivetrain, as well as the engine fluids. It takes about an hour. Once you’re all warmed up, the Onyx sources oil-burning torque from its 908 Le Mans car's diesel that gives you anything but a prototypical ride. If 600 horsepower wasn’t enough, they supplemented it with an additional 80 via electric motors.