Waymo can hit break even even with the relatively expensive Jaguar SUVs and Driver 6 hardware suite. As someone else pointed out, Google is making more money than most people realize on a per unit basis. My back of the envelope estimate is at least $2000 per vehicle per week. That easily covers financing the capex with thousands left over for opex and overhead.

Just switching to the Hyundai SUVs takes tens of thousands of dollars out of capex.