It will be bittersweet in a self driving car realizing that since I don't have to pay attention, I can do so much more with my time!.. and then promptly stare out the window for an hour.
And now I realize that in the first case, it is a personality issue where if I am stubborn/stiff/unyielding, I will get annoyed at unexpected movements. I find this to be true also with my wife :D
In cars it's largely about how much I can see outside, if I'm facing the direction of movement, etc. Usually in common vehicles I do not suffer unless I read/phone/etc. However in a bus-limo thing on a work retreat we all sat sideways.. on windy roads.. I could still see out the big windows, and tried to face my body forward but it was a rough, rough ride regardless.
I've never investigated it much, as it's such an awful feeling I have a hard time debugging it.