There are two ways to add up the average spending on cars: ask individuals to estimate their aggregate expenses, or add industries together (dealerships, repair

There are two ways to add up the average spending on cars: ask individuals to estimate their aggregate expenses, or add industries together (dealerships, repair shops, petrol stations, insurance agencies, etc) and divide by population. I suspect Uber statisticians did the latter. I also suspect that method is more accurate than people entrenched in car culture estimating their own expenses.