If your summer travel plans include a road trip with your teenager to visit college campuses across America, prepare to put a dent in your wallet. I should know — over the past year or so, I took my son (who just graduated from high school) to visit 10 prospective out-of-state schools. Yes, 10.

In fact, this was my second time making the rounds to out-of-state colleges. My oldest child, a daughter, just wrapped up her third year of college,