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October is actually my favorite time of the year to be on the road. Traffic is way down from the summer. Hurricane season is over. Winter has not set in, although - to be sure - the odd snow storm is possible in the northern mountains. There is a nip in the air that encourages you to get out and walk through some of the parks along the way, rather than just drive through and say you've been there. If 'dino parks' are what you think of as kid friendly, then you may be selling your son short. See what he thinks of some slightly more interesting (you don't have to use the word 'educational') venues like the Great Smoky Mountains, Mud Island, a wildlife refuge, the site of an Indian battle waged by Custer and the 7th cavalry, Petroglyph National Monument, Walnut Canyon National Monument, the Museum of Northern Arizona and the Mojave National Preserve for starters.
AZBuck