> With Uber, the payment takes place later and an e-mail receipt is sent, and the fares are seemingly intentionally obfuscated (see: the controversy about displaying peak v. off-peak pricing as a multiplier rather than a dollar amount). Hence, a driver using a malicious Uber Driver app to report a few more blocks travelled on each trip is much less likely to be detected than a cabbie physically and obviously entering additional fees. I suspect Uber would find it difficult to prove that the driver's (fake) extra mileage wasn't actually rider-requested or an attempt to circumvent traffic - and I also suspect most riders won't notice.
Au contraire, Uber provides you a much easier way to audit your ride, a detailed email receipt seconds after you leave the cab with a map, origin and destination addresses, breakdown of your fare, how it was paid, and a customer service email address. On your phone, you also get a couple survey questions about the ride (how was the car, driver, etc.) too.
https://skitch.com/bkerley/ecigm/skitched-20120814-192957
I haven't had to deal with them (Miami doesn't have Uber yet :( ) but I suspect that their customer service is more interested in customer happiness than pinching pennies. Since it's paid with a credit card, even if their customer support process breaks down, you still have a powerful recourse.