On any given afternoon you might hear a bicycle horn as a three-wheeled yellow adult bike heads your way. The hand pushed vehicle is adorned with many types of snacks and hand made beverages. Prices range from $5 to $30 pesos. Try, the Tostilocos for a full snack that goes great with an afternoon Netflix.
Tostilocos are a popular Mexican antojito that consists of Tostitos tortilla chips topped with cueritos, cucumber, jícama, lime juice, Valentina hot sauce, chamoy, Tajín chili powder, salt, and “Japanese peanuts”. The dish was first conceived in the late 1990s by street vendors in Mexico. Wikipedia
Secrets of Lo de Marcos 