Saw it nearly cause a crash this evening as it went up Richmond hill.
It went past a 4x4 and was speeding as it did (seeing as the 4x4 was going the same speed as me and I was going 50), then as it approached the corner near the top looked like it was going to try and go past the van in front of it, which is where the road is too narrow.
The guy in the van swerved right in towards the hedge and nearly had an off because I guess he thought the sierra was going to either force his way past or go straight into the back of him.
Luckily there was no incident and sierra-boy actually drove quite ok after that from what I could see.
Pretty bad road manners though to cause someone to take evasive action like that - and having seen him doing stupid overtakes a couple of times now & hearing others saying the same thing I'd guess it's only a matter of time before something bad happens.
And yes, the reg number is one that seems to loosely relate to the model of car/engine size as mentioned in the previous thread.
Please show a bit more respect for other drivers fella if you read this. I'm not going to insult you or call you names for your driving but you are dangerous and you'll cause an accident if you don't slow down.