The Philadelphia Parking Authority is working to keep uberX illegal in Philadelphia, according to emails uncovered by the Philadelphia Daily News.
The news is at odds with the PPA’s messaging when uberX went rogue and launched in Philadelphia in the fall of 2014. From our story:

“We’re just enforcing the law,” said Taxi and Limousine Division Director Jim Ney. He added that it wasn’t a matter of being “for” or “against” uberX — if the state legislature legalize ridesharing in Philadelphia, the PPA would happily regulate.

Upon reading the Daily News story, Josh Kopelman, whose firm First Round Capital was an early investor in Uber, took to Twitter to express his displeasure.
https://twitter.com/joshk/status/692728451879583744
https://twitter.com/joshk/status/692729426203807744
https://twitter.com/joshk/status/692729881281613824
https://twitter.com/joshk/status/692730953811234817
https://twitter.com/joshk/status/692731567253372928
The Daily News reporter who filed the story, William Bender, took note:
https://twitter.com/wbender99/status/692771371542286336