Yesterday I drove to Mississauga, and used Google Maps to give me an initial idea of where I was going. I was annoyed because it took me over the 407, a very expensive toll road. Unfortunately there was no way to change the route, so I made one up on my own and used BlackBerry Maps to figure out the last bit once I was on the road.
Today however you can map your route, and drag the route around to try out alternatives. Absolutely brilliant, and only a day late.