Ah, i see. I misunderstood your argument. I thought you meant something like "an average person want to pick up some uber shifts. they already have the car, so the expense can't be that much." I'd assumed an average person would have an average car, and thus average cpm.

you mean (i think) someone needs a car for whatever reason. They specifically select a car they can use with uber, maximum mpg, least maintenance, and used. That might work. i'm still (very) skeptical of the $0.20/mi cost. But i could see you might be able to get that quoted $0.37 down to $0.32 or if you're really lucky, $0.30