you were very calm - I would have lost it. Hope she has been reported to go on a driver awareness course. I stick one of these 1.5 m staying alive pictures on the back of my bike which as been quite effective
http://www.thebikecomesfirst.com/stayin-alive-at-1-5/
Then after watching I'd also question
Where is the previous 1 min or more of footage?
Why is dashcammer speeding up?
Why is dashcammer tailgaiting?
No the actions of the Seat where unacceptable but as I cannot also vote on dashcammers regd or fully understand why this situation arose I cannot therefore vote of this.
I mean, what sort of divvy behaves like that with the company's phone number on the side?? Moron or what.