Final answer:
In case of an accelerator failure, the driver should shift into neutral to safely coast and stop the car, avoiding damage to the transmission.
Step-by-step explanation:
If your accelerator fails while driving, the safest option is to shift into neutral.
This will disconnect the engine from the wheels, allowing the car to coast and enabling you to use the brakes effectively to bring the vehicle to a stop. It is important to avoid shifting into reverse, park, or a low gear, as these can cause damage to the transmission and may lead to loss of vehicle control.