B means Brake manner that some versions, together with electric cars and trucks, provide. You can use it to decelerate or retain downhill velocity with no utilizing the auto’s brakes. The system also enables the car to generally be pushed in pure electrical method by mechanically decoupling the petrol engine. https://gearbox-auto20741.verybigblog.com/33017999/the-ultimate-guide-to-gearbox-auto