Totally agree with the above. You would be putting yourself and everyone you share the road with in serious danger by trying to do this trip with just taking naps in rest areas. Either stay in cheap Motels and expect to for at least 3 nights or ship and fly, they are the 2 sensible options, your first is a non-starter. Whatever your reasons you really don't want to be 'playing' with the lives of others, including children. Think hard and stay safe.