Is there a name or phenomenon of the feelings the passenger gets that the driver does not? Example: A driver of a car feels that they are driving smooth and comfortable, yet the passenger feels like they have to hold on to the door handle and feels that the ride is rough. If the two folks in the car reverse roles, the same holds true. Is this a physics item, or more psychological? I would imagine that a person will get used to the speeds and forces in time, causing them to feel "numb" to the forces, in medicine the is called "tolerance". Would that be called the same with forces that we become "numb" to? Or is there another name? This may explain why we feel that going the speed limit for experienced drivers seems so dull and slow, causing us to speed up to what "feels" better for them. This is for a project I am doing in attempt to explain why we feel the need to go faster than the speed limit and the risks that accompany it, while having a false sense of control. ( other than the thrill seekers looking for the rush ) Thanks!!