I think we need a Supercharger at Webers.
Wait.. you're from San Diego and know about Weber's???
That would be a popular stop location, and they have a huge parking lots on both sides of the highway, but there is only a footbridge over the roadway and would need two sets to serve both northbound and southbound traffic.
Personally, I think Gravenhurst would be ideal. A bit farther north and would support traffic going up Hwy 11 towards North Bay and traffic going up 169 towards Bala and points north. Toronto to Gravenhurst should be easy, and with a Supercharger going in in Toronto, it would be easy from points east or west of Toronto too.