"Shortcuts make long delays."- Bilbo Baggins, Lord of the Rings. There are a few problems that may counterbalance your plan. 1. Relief agencies may themselves utilise your routes heading south as you bottleneck things going north 2. If you encounter any problems you are 'off the radar' of allready overtaxed relief agencies 3. the mythical pagan biker gangs out to sieze your freeze dried lima beans and 12 guage shells will likely ply these routes with 10 guage shotguns.