Hypothetical explanation: Ruth Porat would want to sell Waymo because she knows on the one hand that they've not been able to remove human drivers in their serv

Hypothetical explanation: Ruth Porat would want to sell Waymo because she knows on the one hand that they've not been able to remove human drivers in their service in Phoenix, and so they have no path to profitability, and on the other hand, that there's plenty of speculative investors who are willing to pay top dollar for a self-driving technology even if it requires a human minder.