There is something about cars that brings out the obnoxious sociopath in many drivers.
I cycle commute to work (20 mile round trip) for two reason, fitness and the environment.
Part of my commute takes me through a village with a narrow main road where unavoidably I hold the other traffic up just one of those things. I couldn't get any further over to the left.
Keep in mind that I am doing 20-25mph in a 30 any way yet I often get people sitting on my rear wheel revving away. The whole thing only lasts a minute, but they have no patience.
Then one day a guy overtaking me did a very telling thing. He drew level and wound his window down to shout,"Put it on the pavement, you f'ing loser!"
I realised that he put me in a lower social/wealth bracket than himself. I must be mustn't I or why would I ride a bike ?
Ironically I could buy several of his cars without a loan, but obviously that wouldn't cross his mind.
About 2 miles further on we enter a town that is a bottleneck and the same drivers sit there at a standstill, held up by other cars far more than I held them up, yet they don't say anything to them as they see them as equals.