He stopped when he had his ear tubes opened but they don't recommendit only seems to be when we are on bendy roads, sharp turns, etc.....I drove across South Africa with him and he only barfed once (and that was at a bendy part). Like Moondance said, no rollercoaster for him (I don't like funfares anyway, his Mum does though!)
that surgery too much now.
He'll out grow it in time and give you something else to be concerned with.