Cars and large trucks should mostly belong to highways and country roads.
Only 28% of people in NYC commute by car/truck/van. 55% take public transit and 10% walk, 1% bike, 4% work from home, and 2% take a Taxi or other. https://www.nycedc.com/blog-entry/new-york-commute
PS: The van thing is also closer to a bus than a private car.
And with that said, Toronto is far from being a city where we could live without cars for human transportation - without Uber getting around would be hell.
Delivery trucks are, or course, incredibly important in a city. But they are also much more efficient than cars moving 1-2 people, so they need a bit less road capacity.
Also, city traffic is pretty favorable for electric vehicles with recuperative braking, so the coming crop of city buses and delivery trucks is going to have a significant portion of all-electric or hybrid vehicles. This helps the air pollution problem.