Person A. Random bad bout of motion sickness, not happened in this grown adult since childhood. Clearly very ill. Difficult journey so sickness ends up a full blown panic attack with intermittent heaving but contained with plastic bags and wet wipes, and Person A doesnt want to keep stoppinng to be sick every 5 to ten minutes. But speed is increasing the panic and keeps insisting that Person B slows down.
Person B is being very patient. Offers to stop, stops to try and buy remedies, opens windows etc. Does everything they can. They are driving will below the legal limit, so say 40 in a 60. This is slower than they would normally drive and they are making an effort to do slower braking and accelerating than they would normally do, but Person A is still asking them to slow down.
Person A says Person B should have slowed down further as it was a quiet road and maybe pulled in to let traffic pass if there was a queue.
Person B says that they were not driving fast and dont agree that they should have slowed down more on single lane roads.
The reason it was a difficult drive was that person A has a fear of heights and there was an unexpected (to A) climb up a very steep mountain road with high drops. Person B has driven this route many times, enjoys the drive and didnt think to mention the drops as didnt know that Person A was scared of heights.