I learned early on that my dear husband loves to drive and will very seldom let me do any driving. That was ok with me because I could sleep the whole trip and then sleep the whole night when we reached our destination. Fast forward 40+ years and I do very little sleeping. I have learned that I can read in a car. I also can crochet and knit hats on the hat looms. Try some of the suggestions that others have suggested and hopefully you will find something that works for you. Have a fun vacation.