This summer (the summer after I graduate from high school) me and a few of my friends are going on a one month road trip. We are starting near Cleveland, OH, heading southwest through Nashville, down through Texas, Vegas, up through California, and then back east once we hit Seattle. We're hoping to have $10,000 saved up for this trip. Does anybody have any tips for a group of 18-year-olds traveling cross-country? Any little-known stops that we just can't miss? Thanks!