If the projections remains as is for 2040-50. where do you put 2,5-3,3 million more vehicles on the existing roads without having 7/24 gridlock??
At the same time, tunnel need veneration every x distance and where does this dream of a highway tunnel under the 401 to be place when there is no room in the current ROW to do it?? At the same time, what will be the impact be on those who live/work/play next to these veneration shafts??
If you want the tunnel for traffic that will be bypassing the city, how do you build ramps for highway 410, 427, 400, Yonge, 404 going north only??? Do you allow southbound traffic to have access to this tunnel??
How do you deal with accidents and fire in the tunnel that will happen from time to time??
Do you set the minimum speed for the tunnel at 100 km and how do you enforce it??
The current GO System will have to be expanded to areas that used to have rail service to the point you need to build new lines using shorter trains. It will have a major impact on Union Station and other areas.