So it's a Saturday afternoon and we are on the motorway going housey shopping etc. Driving behind an RS4 (should I say BMW!?) doing that "I am in the outside lane doing xmph.. it's MY lane". So anyway, indicate right to show our intent to overtake him. He pulls over... lets us past and we catch up with some traffic ahead. So Mr RS4 pulls out, drives up our behind and starts flashing and waving his arms around for us to move out of the way ??? So the cars in front pull over and we accelerate (overtaking traffic) up to approx 120/130kph (still overtaking traffic) with an RS4 stuck to our rear bumper. Then a car looks like it is about to pull out in front of us, necessitating us to brake reasonably sharply. Last seen in rear view mirror.... very white faced RS4 driver in middle lane (yep a middle-land cruiser) getting earful from wifey in the passenger seat looking like he needs change of pants. Why oh why !!???