One Amazon Flex driver in Cleveland, Chris Miller, 63, told me that though he makes $18 an hour, he spends about 40 cents per mile he drives on expenses like gas and car repairs. He bought his car, used, with 40,000 miles on it. It now has 140,000, after driving for Flex for seven months, and Uber and Lyft before that. That means he’s incurred about $40,000 in expenses—things he didn’t think about initially, like changing the oil more frequently and replacing headlights and taillights. He made slightly less than $10 an hour driving for Uber, he told me, once he factored in these expenses; Flex pays a bit better.