The phone chargers are a small, but very big improvement. Snacks I could be whatever about, but getting 10% extra juice in my phone during a taxi ride could make the difference for me between requesting an uber ride or this.
It's small-batch, handmade in the nice part of the Mission with carefully-sourced beans. Basically as San Francisco as it gets.
Seems like the cost would add up, but I guess they hope most riders won't partake.
Actually, charging for concessions (conveniently via the app) might be a very interesting business model. At the very least it might allow them to subsidize their base price, which is super-important given the price war with Uber that's going on right now.