It was only a matter of time before someone came up with this. It overlays realtime traffic data on top of a Google Map of Toronto.

This mash-up is far less exciting than The Beer Hunter and the two should really not be combined. Another mash-up of note is HousingMaps which combines Craigslist apartment rentals with Google Maps. Maybe you should check it out if you need to check highway traffic speeds just to get downtown.