Thank god for technology.
Google map will give you street directions for cities in Mexico. They will also give you directions from a city in the USA to a city in Mexico. For example if you enter Phoenix AZ to mexico city in the search it will give you the directions, time of travel and the distance. It also has the street level for streets in mexico. The street level option has been available for a couple months now, but the directions is brand new. Mexico with the help of a USA company like Google is going to be the most advance technology country in Latin America.