This. Obviously, it doesn't help you read but if you're bad enough that just being in a car makes you sick it helps a lot. When I was younger any car sick kids got to sit up front and there were a couple of adults who had to be the driver for the same reason. I still get bad on boats and the only thing that has worked is to find somewhere to lie down and close your eyes for the journey. Makes a big difference on a ferry. Not as effective in smaller boats.