thank you for the response. i'm wondering how my meta-uber app would obtain my origin and destination. is Doctorow proposing that the user manually enter origin and destination into both the actual uber app and the proposed meta-uber app?
So, meta-uber would need to embed within itself a hacked copy of the actual uber app, or just very carefully mimic calls to Uber's backend somehow.
Or meta-uber would need to somehow have the permission to run and inject data into an authentically installed instance of the Uber app (not quite sure if or how, say, the Android platform's security model would allow this.)