Our family will be traveling from Washington to Indiana this summer. We have 2 or 3 weeks and plan on making it a full road trip, seeing sights and having fun along the way. As well as trying to keep costs to a minimum. Any ideas on the best route? I90 or I80? Do you know of places to see as we head to and from? Also ideas on make-ahead meals/snacks? I definitely don't want to eat fast food the whole time and only have so many ideas myself. Are there other sites to help plan?