Plan road trip
Mesilla travel along l-10. Plan to travel l 10. Plan hotel chain. Sign up for rewards. RSVP online and check on specific hotel rate. It you use rsvp site you miss free rooms from chain.
Armadillo look for Steak or BBQ ahead of time.
Take l-10 E to l-75 N to Atlanta. Drive through town on Hwy 40N. Stay overnight N or S of Atlanta.
Continue to Chattanooga.
Mentioned in this answer: