While adjusting to Phoenix, she says she noticed that some stops are inconveniently located or lack shelters, that times between pick-ups can really screw with her schedule, and because the Valley is so spread out and "built for cars," it's difficult for bus-riders to travel through it from city to city.
During her research, Miró would approach subjects at bus stops and try to get a feel for the rider's story and emotional effects of the system.
These are opinions that Miró says are often overlooked or simply rounded up in percentages.
After completing the book, she says the project has driven her to ask tougher questions about the effectiveness of the Valley's transit system.
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"My intention wasn't to get close to the policy-making part, but now I'm more interested in that," she says. "In the beginning, it was just a platform for the stories, but now the stories represent something and they show gaps in the system and it makes something that's more political."