Don't give up Andrew!  The MTO is certainly not using media to educate drivers on left-lane etiquette...I'm old enough to remember the MTO TV ads in the 60's and 70's where citizens were taught key elements of effective driving habits (don't hog the left lane...don't crowd snowploughs etc).  I do alot of weekend driving and revel in the chance to meet so many left lane laggards...there they are...fiercely gripping their steering wheel staring fixedly in front of them content in the sure and certain knowledge that so long as they travel at 105 km they are performing a vital public service of ensuring 30% of highway capacity is underutilized and dozens of drivers behind them are in their thrall!  Not to worry...there is a special (slow) lane for these people in front of the pearly gates!