Another day of exploration Tuesday, January 28

After getting morning coffee from the vendor who stands on the corner with vats of hot drinks, cereal and pastries, we headed out on the MetroBus to the Terminal del Norte to buy bus tickets to the pyramids at Teotijuacan. 
Ron climbed hundreds of steps to the top of Pyramid of the Sun while Andrew sat in the shade. 
We really got to appreciate the MetroBus system, long articulated vehicles high off the ground that ride in the middle of the street on separate reserved lanes. They arrive at least every two minutes, and in rush hour are nearly continuous, arriving at the stations before the earlier one exits. 
Later we had a curbside dinner of huaraches, usually meaning sandal, but in this case bread baked on a griddle, topped with frijoles, vegetables, cheese and choice of meat, etc. Gelato and a cup of mango pieces from  other street stands topped off the meal.