My 8-year old and I are moving to NJ this summer. I plan to stick to the interstate and am leaning towards taking the 40. Our "must sees" are the Grand Canyon, Busch Gardens in Virginia, and Washington DC. I would appreciate any suggestions regarding driving the 40 and other sites to see along the way. I will most likely drive 7-8 hour days and will make hotel reservations in advance. Thank you for any advice!