These are great ideas...much appreciated.
I will need to begin plotting them on maps and researching some of these suggestions. Crazy as it might seem to some I love the planning stage of these trips. I've made the east-west portion of the trip previously but only as far as the west exit of Yellowstone before heading south so the WA, OR and CA parts of the drive are especially exciting.
The idea of heading north from home (Toronto) and crossing over at The Soo is one that never crossed my mind but I love that plan.
Frank