Today's rubbish driving was actually rubbish cycling. I caught up a nondescript city bike whose casually dressed rider took every opportunity to stop 'at' the red light but as far forward into the junction as possible. Great familiarity skills with the light sequencing, but not great popularity improvement skills.
Anyway, thanks to this outright cheating and one or two gratuitous filtering manoeuvres along Church Hill, we traffic jammed our way to a bus on Bruntsfield, where the stop is built out so much that following vehicles pretty much can't get past. I took the wide primary position to overtake about four cars and the bus, while this guy undertook all the way to the back of the bus and then dived to his right to overtake, without looking for oncoming or overtaking traffic like me. I half-expected it and overtook him as well, shouting "Shoulder Check!"
I think a lot more cyclists would do well to be taught observation by motorcycling instructors.
There was a vehicle on this morning's commute whose driver decided to slow and turn sharp left in front of me without signalling, but I can't remember where it happened, or what kind of car it was. Just another event in the life of an urban cyclists I guess.