How do you get from San Miguel de Allende to the Gulf side

I still like turning off Mex 57 at San Juan del Rio, jogging over to Pachuca, then south to Puebla. It's a nice drive, and c-a-l-m. No freakin' tolls. Real de Catorce is worth seeing using your toad. And I like the city of Queretaro. Wait, I forgot about Guanajuato. Many folks like San Miguel de Allende.

On 57 watch for individuals standing on the side of the hwy surrounded by bottles. They are selling Agua de Miel and I love it - the precursor to pulque. You can also find superb honey for sale.