Some SUV drivers take offence that I follow 30mph speed limits, also sometimes on motorways if signposted due to workers on in the road. I know that my speed is correct as I compare with TomTom satnav.
The irrate driver will then follow me just 0.5m behind and blinks his headlight, urging me to go faster. Next he will find an opportunity to overtake me and cut me up.
But I'm more experienced dealing with this and know what he's up to. Once he is at the side of my car, I slow down to foil his attemt to cut me up. I can see that it really pisses him off because he will then try to block me. But I know better & keep ample distance behind the idiot.