'Shocking Driving' caught on dash cam

[theplayingmantis]

https://www.bbc.com/news/av/uk-england-norfolk-458...

Apologies if dupe thread, but (and i await a roasting from the driving gods on here) but what has the white beemer @0.19 in done wrong?

[anonymous-user]

Thread is here - the same was highlighted with the BMW there: https://www.pistonheads.com/gassing/topic.asp?h=0&...