@Saka I know our @Aaricia has recently come back from the mount wilderness of Poland, she may vouch for you, maybe? 😉

But yeah, I have the same effect on some mountain roads if they zigzag a lot, and I am the same as you when it comes to...ahm... road trip mouth hygiene, I only ever experience emesis during food poisoning. Though for me, the feeling of nausea usually subsides rather quickly once I can stretch my legs and walk around a bit after the car has stopped.