No City had ever used a Cable-Gondola system for anything but amusement parks, ski lifts or ore, but with the end of the Notorious Medellin Cartel many social problems were addressed.
The immaculately clean Medellin Metro 'Station at Aguacatala'
For the extremely poor to reach workplaces in town easily consumed 2 hours, before they could board the Metrorail System. So the idea was floated to use a Cable-Gondola System known today as Metrocable. Moving at 12 MPH over the City without stop lights or traffic is amazing. Linked with Metrorail the system is a smashing success and World model. Today Lines K, J, and L, are in operation and H and M are under construction. Free to the poor. Metrocable could work anywhere where Mountains, Rivers or Rail Yards cause issues. Cost is less than rail or advanced BRT.