I think you misinterpreted my kind of photography. I regard myself as openminded. I want to keep my eyes opened all the time, and photograph little stories in the USA. It is not my goal to capture "the usa". I prefer to work in contradictions, in series, but I don't claim that my pictures are the truth. The examples I gave where meant to explane the situations where it would be bothering to think about a sleepingplace while I would busy photographing the situations I described above.
Yes, a tent is the cheapest way of travelling. (I've spent one of the two last months in a tent in France, so I know how it's like to travel with a tent.) The thing is: in my opinion, a photographer has to be on the spot when he wants to make a reportage. I want to give myself the opportunity to bump into little stories on my way. I prefer a RV (or van or aliner) because that brings me the close to the action. I'm not going to meet a lot of people when I'm on a campinggroud unfolding my tent everynight.
I have traveled both ways: with a tent and with a van (even when I was a child, I've seen the former czechoslovakia with a van), and my experience is: you get to meet the most interesting people when you're sitting by the road with a van. It's not in the bars or the shops where I meet the people I like to photograph, it's in the streets.