Who knew!? I can't use screens in a moving vehicle, so I've turned this on and may eventually find out if it works — Vehicle Motion Cues — a.k.a. Apple’s Weird Anti-Nausea Dots:

Introduced in 2024, Apple’s Vehicle Motion Cues promise to tap into your device’s accelerometer and gyroscope to reduce or, in my case, even eliminate the motion sickness felt when trying to use an iPhone, iPad, or MacBook inside a moving vehicle.