Most of the negative comments are no doubt from the 4 Wheel Drive Brigade, who actually never get in to 4 Wheel Drive.
Having Driven a lot of different vehicles in my 44 years of driving, that's from a moped to a 44Ton truck, all so many car drivers pull in front of HGV's and wonder why they get rear ended, the dash cam has been one of the best inventions ever to come to market.
I agree their are a few HGV drivers that need re examination.
If I was a transport manager I wouldn't reprimand this driver, I would just of said back off a little next time.
I would take a guess the range rover driver was on a call or texting.
Unfortunately with out a tracker the police would have little to go on.
Now a HGV has a tachograph fitted, and it it were the other way round and the HGV driver was on the phone, and by the sound from the video I think he was it's a different matter.
That could have been so avoided if the lorry driver was paying attention and saw the rangerover indicating to merge for an extended amount of time and actually gaveway.
I agree with others that this is typical for non indigenous drivers who incidently have a much higher accident rate than indigenous drivers and therefore increasing insurance priced.
Inbred? Eastern Europe has the most diverse gene pool on the continent. You should look for islands if you want to find inbred population or even better just take a look in the mirror.