i used to be one of them "fast" drivers" but now i have several speeds:

family driver - for when i have family in the car, so nice and steady
van driver - get the fuck out of my way or i'll break your wing mirrors
in a hurry driver - red lights? what red lights? officer, my son needs to get to the hosiptal,, now kindly fuck off out of my face or i'll have to run you over
normal driver - polite
lazy driver - yeah, sure, i'll stop here and let everyone out, i don't care who's beeping
etc