I think you are due a reality check with your plans. Ignoring the costs completely, travelling in a RV or pulling a camper is not going to get you closer to the real USA. If anything you will probably get a distorted view of people in the US or for that matter Canada.
Originally Posted by jos
US culture is much different than most of Europe. Most Americans are not readily open to meeting strangers and sharing their daily life, even less so with people with accents. To do this kind of project you need to pick an area and stay there for an extended period of time and get to know and understand a community. Just breezing through on an RV won't garner much deep interaction with most folks.
My 2 cents,