Earlier quoted context omitted.
> Uber's infrastructure is completely incapable of handling that volume of data, The data volume isn't very big. Let's assume Uber records locations for 20 million users and pings each user every 5 minutes. We're talking about 20 million users * 12 events per hour * 24 hours * 16 bytes (my generous assumption of how much it would cost to store a user id, timestamp, and precise long/lat data) = ~100 GB a day or 3 TB a…
Being a bug, though, it would record with the fidelity of the Uber app. Which is a lot more than every five minutes.
What I'm getting at is that it's pretty straightforward and easy for Uber to maintain a database of every user's locations at all times, even if they aren't active users. This kind of data is valuable. Assuming Uber isn't already doing it, all it takes is one mid-level product manager to initiate a small project to kickstart it.