Steve, some folks can perform their job while on the road. When my consulting was going better, I could do almost everything on the road (have a full office set-up in the bus). Most of my work was expert witness related. I did some traveling in the bus for things like depositions. Unfortunately, much of that travel was done by plane

. At least one of the lawyers I worked for had software where we could jointly, in real time, work on my expert witness report via an internet connection - again from the road.
Some folks do "workamping"
http://www.workamper.com/optinnew/index.cfm . We have talked to a bunch of these folks and they all seem to enjoy the working conditions and the flexibility to explore a lot of areas. As mentioned, you don't make much, but some of your living costs are covered and you get a bit of spending money.
We, of course, have an RV related business that takes us to RV rallies. Good way to go broke quick

. I have spent a great deal of time talking to, and "analyzing" the vendors and their ability to "make money". I would say that probably 70% or more are not making money from their business - especially in this terrible economy and the even worse condition of the RV market. That number in recent years is probably very conservative. We belong to an FMCA chapter called "Professional RV Vendors Chapter". I has at least 50 active members and the general mood is really bad. For many of the "losers", the tax write off on their personal income justifies the lifestyle. The lifestyle, BTW, can be fun. Setting up and tearing down the both is a pain, but meeting folks and seeing the country is lots of fun. Besides that, vendors become "family" much the same way that bus folks do and both have some sanity issues

.
Jim