Waymo is testing its cars in a situation without any snow, rain, mostly without street parking, without pedestrians, in a city so hostile to pedestrians no one’s walking around.
99% of the work isn’t in getting the self driving to work in perfectly controlled sunshine conditions as Waymo has it working right now, 99% of the work is in getting all those edge cases working.
It’s gonna be decades before waymo cars can handle small mixed use streets with children playing on them, pedestrians, cyclists, and street vendors in a european city.
What they’re doing is amazing given the tech they have — but it’s not enough to reach actual level 5. It’s the same issue why most self-driving solutions only work on highways.