What's all the aggression about?

yesterday, whilst riding home along past chealsea FC a motorbiker complemented my bike, we had a little chat and it was nice.
made my home journey for sure.
But also does anyone else smile when a car speeds past you and you catch them up down the road and then pass them, and they don't catch you back up due to the traffic.
thats the best feeling a cyclist can get (in London, IMHO)

yeah feelin that in any urban centre I cycle in, my favourite thing when they really boot it to the next traffic queue/ lights and then you just smoothly roll past on their right, give a side glance in their window as if to say 'ahhh, join the queue loser'