YES!
I can maybe do something with this. Not right now but when I get home. It'll not be 100% accurate with following roads as it basicaly involves using the google maps engine and drawing vector lines on it, and there's no way I'm supplying points for every kink in the road, but I can roughly follow the main artery roads etc. that will be used. I can also put pushpins in for the main points on the journey like the handovers.
Let me have a play the night as I've not done it before, I only know the theory/concept behind it, but it shouldn't be that hard for a man of my immeasurable genius to do.
I'll whip up a sample and if it's good we can run with it.