Electric Water Pump

Other than cool down in the pits or you could run off the battery, disabling the alternator during a run, thus saving the engine from the heavy load from the alternator. But on a street car, you cannot do that.
I see no real advantage on a street car. You either drive a mechanical pump, which costs HP, or you drive an alternator, lose efficiency, run an electric motor, losing efficiency, and in some cases, use a separate belt / pulleys from the motor to the pump, losing even more efficiency.



What have you gained in the end?