In the rare occasions I take an Uber I always ask about the economics of it. From my anecdata it seems like most have never done any modeling of depreciation or maintenance cost forecasting, even extremely basic like miles until major service required and how much it would cost. At most they factor in the monthly oil change, if they even do that.

Maybe some enterprising person on here could make a slick web app to help people estimate depreciation and maintenance costs, with a user interface that people with a high school diploma could understand.