I Used to watch the gravel or grass whizzing by on the side of the road until it made me nauseated. Then look away to recover and then go back to it again. Eventually I overcame the nausea completely.
I Also used to telegraph poles and report to my parents periodically what number I was up to. I would get very upset if dad drove too fast and I couldn't keep count. On long trips I would count poles into the tens of thousands.

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Never, Never, Never Give Up