My hubbie and I are planning a roadtrip from NY to San Francisco next week! We have our 2 small boys ages 6 & 7 with us. We have family in Chicago, St. Louis, Indianapolis and California (LA and SF). We want to see NY (Statue of Liberty, Times Square, etc), Niagra Falls, Grand Canyon, Yosemite, Hoover Dam and anything else we can on the road. We have a total of 5 weeks total. We think we can go westward in one week, stay in Cali for 3 weeks and then take a week to go back to NY. Is this doable? What are highlights for kids? What is the best route I-70 or I-40 or Route 66 backroads? Any tips, advice would be great!