Ban Nissan Micras and improve traffic flow 20%

Yes, if Micras were banned I reckon that traffic flow would improve by at least 20%. No more Micras sitting in the overtaking lane at 45kmph with big queues of frustrated motorists behind them. I have nothing against Micras in general (well, I do, really, but...), it's just that the demographic of drivers who seem to want to own one is inextricably linked with a lack of awareness of the rules of the road, and of general courtesy to other road users.