Justin and Jason discuss the Uber nearest drivers challenge, specifically a clarification on Jason's "reinvention" of the quad tree algorithm as well as a description of a new and improved version, Udi's arrival and participation in a Catalyst session, the Catalyst text-adventure project, future plans for the Catalyst IDE and the idea of making Catalyst an online offering, the NYT's Tesla test drive controversy, how Uber was ranked as one of Forbes most innovative companies of the year and Uber's fight against regulatory barriers, Jason's recent obsession with The Walking Dead and why Justin prefers teen dramas, how Udi's family escaped racial persecution in Turkmenistan, maintaining an old version of a software project while moving forward with a new version, securely storing passwords, a list of some favorite podcasts, and what it's like for Udi to be trapped inside of a TechZing episode.