
The only time it makes me upset is if the driver is driving dangerously. E.g. They are going over 50 in a neighborhood with a 35 limit, or they are constantly swerving lanes and it's clear it's not because they're confused but they wanna go vroom vroom. Otherwise, it doesn't upset me at all, if I am going slower than them, people should be welcome to pass me
I actually find it really irritating when I'm driving in the left lane in a line of cars to pass a slowpoke in the right lane, and then someone comes behind me super-speeding, and attempts to pass in the right lane and skips the line, only to cut into the left because they realize they cant pass on the right. It just causes the cars smoothly passing in the left lane to brake to let them back in and it causes traffic.