[nopinsight]

If a self-driving car can serve for 5 years without a costly overhaul, the amortized cost is only $250k/5 = $50k per annum. Let's say the annual maintenance is $10k, the total would be $60k a year.

It can possibly serve two effective shifts (in fact longer than that but the demand at some hours could be lower and it may need some time to charge, unless battery swapping is performed), which means the cost per shift is only $30k per year which could be in the same ballpark or a bit lower than a human driver would make per shift (depending on the market it serves, etc.)

This is just the beginning though and the costs will most likely come down while the human driver's costs will likely go up.