Furthermore, ArcadeCity does not use ETH for payment. Cash, credit card, debit, and Paypal are accepted.
The Ethereum integration is primarily to sell tokens to drivers, i.e. a way to do public offering (let's hope they comply with SEC regulations):
Arcade City will use Ethereum to issue crypto-equity to drivers, allowing them to own up to 100% of the company by 2020.
It has nothing to do with using Ethereum to enable some new technology that improves upon Uber. It is about governance and creating a copycoin P&D in the Uber space.