GP Drivers Are Dof

Not sure if it is my FS numberplate that incites 'obsessive verbysteek' but I have seen some of the craziest driving by GP cars. Recent example: Sunday I was driving up Glenhove at around midday, 80km/h and managed to slip through 3 consecutive traffic lights, with the third just turning amber as I went through. Even though I was driving quickly and efficiently I had a nutcase shagging my bumper, and then after the traffic light midway up Glenhove the oke puts his foot down...the silver golf passes my right rearview mirror by a few millimetres before he slots in right in front of me. Is heading towards a hospital, perhaps he forgot his wife at church, maybe his kid broke an ankle? 50 metres later the idiot peels off into MacDonalds, and parks at the drive-thru entrance. Now what, pray tell, is the point of that?