Recently some friends set off for a bit of a ride. In essence, 12 months of bike packing to celebrate early retirement. They've been away before, cycling all over the world. This one is the tour of tours. They started in Alaska and are basically following the weather. They are running a blog called "5 Months to Mexico"
Well worth checking out. I hate them more and more every time they update it.

http://5monthstomexico.blogspot.co.uk/?m=1