I'd have to say the GTA is the only **** hole I've been that is like that. I always like to ride / drive with a good double car length in front of me. What the OP is saying is true, soon as you get into the GTA it's everyone for themselves, squeezing into lanes half the size of there car and just assuming you are going to slam on your breaks so they can get in. I can say I've ridden to Nova Scotia and have never seen that aggressive style. I consider myself a good driver, but soon as you get into the GTA it feels like it has it's own laws of the road, and you better adapt quickly or someones gonna get smashed.