Bump starting a car is usually an act of desperation. But in the fastest prototype race cars on earth, there’s nothing desperate about it. Today’s IMSA GTP machines, also known as LMDh cars, are some of the most hardcore hybrids out there. From a stop in pit lane, GTP cars accelerate entirely on battery power, leaving only the sound of whining electric motors in their wake. While still at pit-lane speeds, the cars dump the clutch connected to their internal-combustion engine. It fires with a roar, and the car takes off down the track.
