The Uber car's are absolutely everywhere in Pittsburgh. See probably an average of two one way on my daily commute.

And Pittsburgh is a far more challenging driving environment than either San Francisco or Phoenix, with far more diversity of weather and a lot messier infrastructure due to terrain and freeze-thaw cycles and reduced maintenance after population decline— think 20% grade on cobbles after a snowstorm.

e.g. https://www.google.com/maps/@40.4763879,-80.0106331,3a,75y,2...

Does Uber's autonomous service go to such locations?

Good question— their office is at the end of a crumbling backstreet, at least: https://www.google.com/maps/@40.4627591,-79.9701442,3a,75y,3...