Down to Toronto.

I've also come up with a hypothesis about drivers. The closer you are to a large population centre, the proportion of stupid/bad drivers goes up. This is not linear with the increase in size of the population centre, but exponential as in the graph below:

So larger centres such as Calgary and Toronto have very high proportions of bad drivers whereas very small centres such as Dryden have a very low proportion of bad drivers. Just my observation.
Now it's important to note that we deviated from the Trans Canada at Orillia in order to get to our campground. We'll back track up the 400 to get back on the Trans Canada at Orillia once we return to our journey after a day near Toronto.
Starting from Sault-Ste-Marie:
The landscape opens up a bit east and south of Sault-Ste-Marie compared to north-western Ontario.
Approaching Sudbury, not the large smokestack:
Heading south finally:
On the 400 near Barrie:
At our quite busy campground, it is the weekend after all: