Yep. Kart race on a hot August day. Had 1st and 3rd stint. Was a bit queasy near end of 1st stint and expected to recover during partner's stint. 2nsd stint made about 3 laps of the 1/2 mile course and was feeling horrible. Two more laps and I was off the track in the grass done for the day, but without a helmet and face covered by breakfast. Couldn't even tilt my head to remove my helmet. Walk of shame back to paddock to let my partner finish the race while I sat in misery, waiting for things to pass.
Had not been car sick since I was a kid. Sea sick on Lake Michigan, yes, but not car sick.
I will not go into several amusement park experiences