Traveling with dog.?

i travel with my chi all the time i feed her as normal before a trip and then i just stop at every other rest stop they are usually quite a distance apart and im usually ready for a break myself by the time i get to one. i also keep her some bottled water and i give it to her when i stop at the rest stops. and dont keep her caged the whole trip my chi loves to roam around the vehicle and she especially love laying my my back window where the sun hits her and she can see whats going on. hope this helps