Uber rides are around $1.5 per mile on average. Assume Waymo car drives 200K miles over it's lifetime, 3mi/kWh EV efficiently and $0.20/kWh electricity cost. It will generate $300K over it's lifetime and use $13K worth of electricity. Right now it costs $150K to manufacture Waymo car because they are custom built and Lidars are still expensive. Even at $150K unit economics should be OK. But the cost of self driving cars will go down as they are manufactured at larger scale and will eventually approach cost of regular mid-range car. In a few years they will be under $50K per car. Mapping is a one-time cost and the need for mapping will eventually disappear. This will be a massively profitable business for self-driving fleet operators.