Sometimes the risk is much higher than not getting bored on a long drive.

Another theory suggests that the cause is more about the way some unfamiliar situations make it harder to maintain our natural body posture. Studies show that being immersed in water or just changing your stance can greatly reduce the effects of motion sickness.But we don't really know what's going on. We know the more common remedies for car queasiness --looking at the horizon,over-the-counter pills, chewing gum,but none are totally reliable nor can they handle intense motion sickness and sometimes the stakes are far higher than just not being bored during a long car ride.