Thanks for the replies it is much appreciated. My intention was to use this as more or less a sampling of whats to offer in the Western US. The NP pass is an absolute must, I do agree. being cooped up in the car doesn't bother me as much because the way I planned the trip was to be around 8 hours in the car a day of traveling and a few of more like 10-12 hours but we are early risers and I think it should give us some time to stop here and there to do a few things. We also are going into this knowing that we have never been out there and might stop somewhere we love and want to stay longer then the plan, therefore we can change the trip as we go which also is preventing us from getting reservations at places so were not stuck to a schedule although it would be nice to have the knowledge that we will get a site somewhere in the major NP's . Thanks again