I don't particularly like road trip. But, I seem to be always around with friends who have a fixation in traveling from one city to another by means of car (and I was the driver most of the time). I ever drove to Yellow Stone, Moutain Rushmore, Chicago, etc. The worst experience is to Alaska in which we were forced to return because of forest fire and mosquitoes. The hottest is to Las Vegas when our car's air conditioning was broken.