Another one of those great 'feel' good ideas that's not well thought of.
with probably the worst public transit system in all of g7 major cities, i think there are other priorities we can address first... how about a few subway lines? Yes, it's not 4 billion... but 400 million here, 700 million for suicide barriers, 50 million for a 'green roof' for city hall, 12 million for a homeless shelter that's still not built, etc etc, we sure can manage to start diging a DRL or eglinton.
but on another note, we should charge tolls for people to go up there. People with out Toronto IDs get double charged!