The thing is, it's hard to see where Uber's costs are. They develop software, but that's a pretty small investment considering the hundreds of thousands of rides a day people take.
This is my question, i don't see how they are spending the money they are making as part of operational costs. While their model and implementation is interesting and novel and works, it isn't exactly one which requires a major investment, nor maintenance costs to run.
What exactly do they spend their money on?