We enjoyed Central Mexico enormously, but as you'd expect when approaching the world's largest city, we did find some occasional irritating traffic situations.

Guanajuato to Querétaro was fine, and Dolores Hidalgo was quite enjoyable. The route we took from Querétaro to Tula also mostly worked out OK. Then from Tula it got a bit dicey at times, with sometimes too much traffic on too small roads. We took a bus into Mexico City from Teotihuacán and enjoyed the city that way.

The ride around the city from Teotihuacán to Amecameca was mostly OK, but we had some heavy traffic near where you cross Mexico 150, which is the main route to Puebla.

A real highlight of the trip was the last day of this section, climbing the Paso de Cortéz, the 12,000 foot saddle between the twin volcanoes Popo and Ixta. It was quiet, green, no traffic, absolutely glorious. But a big climb, of course. The Cholula side was dirt, but not bad.