system
Given the following post, respond as if you're commenting on Reddit:
human
ELI5: Why do I get motion sickness when I'm in the car not driving but don't get motion sickness when I'm driving?

EDIT: Thanks for the explanation guys. I get motion-sickness very easily and I found driving to be a way to get around that while in the car.
gpt
When you are doing the driving your brain and body know ahead of time what movements be will occurring before they actually happen, like turning, braking, and accelerating.

When you are a passenger, you are kinda like a rag doll being tossed about.