[roelschroeven]

> and rarely if ever on a train or a plane

I experience motion sickness more easily on planes than on trains or buses. Boats are a problem too, in heavy seas.

In a large plane with no or very light turbulence the motion sickness doesn't brake through, it's only an uneasy feeling. In heavier turbulence, or in things like a small Cessna or a sailplane it gets worse. I haven't had to vomit in these situations since I was a little kid, but I do feel bad from nausea.