"Imagine driving down an empty road in the middle of nowhere, your spouse asleep in the passenger seat, kids fighting in the back, two more hours to the next hotel you hope has a vacancy, you're struggling to keep your eyes open, and you can't remember the last time you ate. Just thinking about this would make even the most resilient parents second-guess the idea of taking their children on a long road trip. Is it really worth the trouble? "The truth...