Final answer:
The average car driver may need up to 100% more stopping distance than a larger vehicle due to the increased mass and momentum, which affects stopping time.
Step-by-step explanation:
The question deals with the stopping distance required for a vehicle, which depends on factors such as road conditions and the driver's reaction time. When comparing different vehicles, a car driver may not realize that larger or heavier vehicles may require significantly more stopping distance, potentially up to 100% more than a typical car. This is due to the increased mass and momentum of the larger vehicle, which means it takes longer to come to a complete stop. It is crucial for safety on the roads that all drivers be aware of these differences in stopping distances and adjust their driving accordingly, especially in terms of following distances.