Fast by itself doesn't bother me. I like to drive fast.
Quebec drivers are aggressive and inconsiderate but at least seem to know how to operate their cars. By contrast Toronto/Ontario has a lot of plain clueless drivers who really don't know or care to drive well. Weaving, accelerating or deaccelerating nearly cliping people,cuttoffs, making pentuple lane changes,missing exit barrier walls by 2 or 3 feet, lane drifters, blinkers left on, chinese people who ignore all english-language road signage, people within a using main traffic lanes as improv unloading zones, people too short to see over the dash, traveling 10 under in the fast lane or 20 in the slow, passing in the slow lane,pole-position style racing pairs of cars, etc.
I've noticed that my highway gas mileage immediately drops ~2 mpg as soon as I cross back into Canada from the US with all the stop and go. It's impossible to set the cruise control without either running into some slowass bastard blocking the middle and or fast lane or having some person come up behind you when you doing 20k over in the cruising lane and are blocked in front anyways and turn on their high-beams.