I like Mexicowander's route if not in a hurry and can get along in Spanish, may do that this year as we are also going south from Cd Valles to Barrancas de Topolopanco north of Pachuca this year on the Hwy 85 mountain road. Arco Norte is a very fast/easy/low traffic and EXPENSIVE drive. Take off either toward Poza Rica on another toll road or toward Xalapa, one of our favorite areas(no campgrounds)and then Veracruz or Emerald Coast. The anthropological museum in Xalapa is outstanding and the the town of Coatepec a hidden gem.
Coming back from Xpu-Ha on the Yucatan to Laredo the fast, easy with a dually and a toad cost almost $600 in tolls. That was quotas from Villahermosa or so to Puebla and Arco Norte to 57 then around Monterrey to Laredo. We had a deadline to get to Phoenix.
