I think suburbia killed Toronto.4 currently, plus a rail line. Do we need more? Not if we plan accordingly.
Why add more highways? What we need is better transit. This will allow the highways to ease up IF, and only IF, you have a viable / reliable / affordable / timely access to transit.
I would love nothing more to go from Erindale Station - Scarborough Centre Station via transit...but I can't. I can...at 2x the time required by car. I'm not willing to do that, and I get my transit pass free!
I'm almost temped to apply to a downtown project because I can just hop on the train near my house, and then hop out at Union with a 5min walk to the office.
Let me dust off my CV.
Growing up in Parkdale riding the red rocket was so normal for getting around in the city.
Enter suburban growth and car centric living with no thought of walk to or public transit options, just drive. No corner stores etc. Drive to a mall. To make public transit work the residence has to be less than a quarter mile from a bus stop and service every 15 minutes. All the traffic controlling crescents and winding suburban streets make the walk longer while making public transit more difficult.
Toronto will never be Amsterdam.