An electric boost function helps in instances where maximumacceleration is desired, when the electric motor works in tandem with the combustion engine during acceleration.
Further attempts involved switching on the motors while spinning Galileo on its axis, and also when it reached the point of its maximumacceleration around Jupiter.
If you're after performance, you can stay in lower gears longer for maximumacceleration and you can downshift, using drag from the engine to help slow the car.