That's problematic thinking, putting more miles on a car wears it out faster. Sunk cost or not, say you drive twice as much because you're an Uber driver, you w

That's problematic thinking, putting more miles on a car wears it out faster. Sunk cost or not, say you drive twice as much because you're an Uber driver, you will now have to perform maintenance and repairs twice as often, give or take based on differences in driving and whether or not the car starts cold every time. Maybe the numbers work out, but ignoring them probably doesn't make sense, especially if you drive a car that is known to be on the less reliable side.