*L* I'm taking the 15 and 12 yr old -- I'll be driving. When I return home, the (almost 18) 17 yr old will get to fly to Washington if he has been responsible in holding down the fort here. A couple of neighbors will help keep an eye on him, too. One is going to put him to work at his auto shop. I'll have a cell phone and call him frequently.
US90 which went from the Atlantic, Jacksonville, out west to VanHorn, TX is known as the Southeron Route 66 - check it out.
Is your trip extended to a month with all the hints and recommendations? ;-)