I am puzzled by your assumptions. 10 rides per day? How many rides do you think a taxi/uber driver does in one SHIFT? 250 days - why? I would expect more like 9

I am puzzled by your assumptions. 10 rides per day? How many rides do you think a taxi/uber driver does in one SHIFT? 250 days - why? I would expect more like 95% uptime and 95% availability, for 329 days.