Here's one breakdown:

https://uberdriverlondon.co.uk/is-it-worth-driving-for-uber-...

I think the interesting number there is 23 000 GBP/year, which is effectively the cost to Uber of having a human driver for one car operating 60 hours per week.

If a computer can drive a car for 60 hours a week, it saves money for Uber if the amortized cost is less than 23 000 GBP/yr.

If a computer can drive a car for more than 60 hours a week, it saves money even if it costs more than 23 000 GBP/yr, although i don't think it's linear - demand is concentrated at a few times of day, so one car on the road 24 hours a day is not equivalent o four cars on the road for six hours each.

In my country, the government's "generous, all things considered" cost of operating a private car* is 45p per mile - which covers not just fuel, but also depreciation, insurance and suchlike.

Meanwhile, a 12-minute, 4 mile Uber journey would cost me £2.43/mile

Of course, the big unknown here is one of driver utilisation: How many miles does the driver drive to pick me up, and how many minutes are they waiting for the next ride to come in?

* Well, it was considered generous the last time I asked a car owner about it. I'm sure a Lamborghini costs more.

Don't forget insurance/liability, gas, security, and cleaning up after passengers, too!