Mike Lynch wrote:
Yes, I was going to attempt it.
My inspiration was a young man who did it on a two wheel bicycle. If I remember correctly, hiw Web Site is / was: The-Road-South.com
I have a few friends who have traveled this entire route. There is a actually a sub-group of people who compete to complete the journey in the shortest amount of time. Myself, i've only done the South American portion of the route - there is no road link between Panama and Colombia, so the journey is essentially split into Northern and Southern portions, where you have to use water or air transport to bridge the two. If you have a small vehicle (bike), you can pay to put it on a sailboat or maybe even in cargo on a plane. Otherwise you have to put it in a shipping container.
I've seen a wide spectrum of modes of traveling this route from AK to Argentina. A Citroen 2CV, a garden tractor, unicycle, family of 4 on bicycles, trekkers, etc. There is a website called Horizons HUBB which used to be the place where people on this journey congregated online. Most of the travelers were European, only a small number of Americans/Canadians.