Motorway police...

[WiNgNuTz]

I got a bit too comfortable because I next said "oh mate, I wasn't even trying". Don't think he appreciated that

I also have been in a similar situation, following some plank who was either drunk, or incompetent up a local road, and at the top, it splits into two lanes on the approach to a mini roundabout. I wanted the 2nd exit off the roundabout, and the plank in front of me indicated to turn left. I naturally went for the relevant lane for the 2nd exit, and put my foot down a bit. At this point, pretty much as i was alongside him, the other driver (still indicating left), started drifting back into the right hand lane. I swerved wide and accelerated to get past him. What i didnt realise was that on the other side of the road, was a traffic car, which unfortunately only saw me razzing past the other guy almost on the wrong side of the road. When he stopped me, i also did the "yes sir, no sir" bit, and admitted that i could have handled the situation better, but when i explained what i'd seen, he was far more on my side about the matter, and i got off with a slap on the wrist and an S59.