[niwell]

The idea of transit along the 401 corridor comes up on occasion but I can't see that as being a particularly good idea. It's by and large a through-route where destinations are considerably further than walking distance from the highway itself. As noted above a northern "crosstown" transit route would better follow existing arterial streets. Even the hydro corridor North of Finch (connecting to the soon to come LRT) would be more useful.

I don't think an elevated structure would need to follow the entire route of the highway, but rather make key connections such as between the 409/427 which is almost entirely industrial.