Thanks!
I also can get bad motion sickness - I'm glad this one was OK for you. I think the plane obstructing so much of the view helps (or at least it helped me as I worked on it - the first day was just flying an empty platform ;-)), it kind of acts like a natural vignette. I also tried to make sure the controls only let you do "safe" things, so you can't roll the plane or dive too deeply. Anyway, I put a lot of thought in this aspect, so I'm glad that it had some success. :-)