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I used to get this as a kid mowing the lawn on a riding mower. After a couple hours, when you get off the mower the whole world seems like it's receding from you slowly.

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This naturally happens in an automobile as well after driving the stateside highways long enough.

This is called "velocitation"

https://driversed.com/resources/terms/velocitation.aspx

Oh my god, I had the same thing happen to me! I had bad eyes from a young age, so I always just attributed it to that... Neat. Makes sense.

After being a scuba diving assistant to instructor thru one summer, I had similar effect after spending close to 10 hours under water every day for weeks: when I lay down for the night on a flat bed and open my eyes, the whole ceiling would float like a water!

This has be somewhat depicted in movie "The Big Blue" https://youtu.be/82onGmBx9ZM?t=74

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