So, on my way home from Heathrow last night. I'm rather pissed off for one reason and another. On K1100. It's about 8 to 8:30 and traffic is moderately heavy. I'm 'making progress' which in my case means 90-110, moving between lanes, trying to avoid using lane 2a where possible (often it isn't) not giving a damn which side I take people on. Probably get flashed half a dozen times by drivers on a journey like this (about 100 miles.) Coming past Reading East and the traffic's eased a little. There's this big blue Vauxhall (about Omega sized) two cars in front in the outside lane. The road's clear in front of him. Dive past the car I was behind on the inside and am now directly behind the Big Blue Car. Move over to the outside to show I want to overtake; there's room for him to pull over. He doesn't. Drop back a few feet and then close the gap to 'remind' him I want to pass. He doesn't move. However... he does something... Suddenly a word appears on the rear window of the car in red letters "SLOW".. and then another appears above it "POLICE". Fuck. Slow down, pull over to lane two; notice the petrol station looming in a mile. Slow down some more then exit for fuel. Car didn't seem to give me a second glance, still I suppose I got the message.