The super weird thing about Taxi drivers (especially black cabs) being in a rush, especially if they have a passenger, is that they're just burning fuel for no reason. When on a meter they really don't need to speed as they're paid for a mix of time and distance.
I guess the only thing is they might feel that their fare is so expensive that they need to make it feel worthwhile for the customer and therefore be in a rush. Although the utilisation of most black cab companies is so low that maybe the fuel they're burning doesn't touch the sides in the grand scheme of things (that is to say they sit idle for 30+mins per hour on average)
2 incidents to report.
1) bin lorry trying to flatten my fiance as it turned out of russel road onto Roseburn Street to catch the lights. She owned it and accelerated out of trouble like I'd taught her. So proud (but obviously disturbed that this was necessary)
2) Drove to work last Friday as I was heading south to a gravel ride thing, Spotted no less than 3 fender benders on the M8 heading into Edinburgh as I headed the other way.
The worst thing was that as we passed a huge queue of traffic, a white van chose to undertake me at about 90mph in order to slam his brakes on to join a queue I'd been rolling up to about 300 yards ahead. Horrifying!