The speaker says Waymo operates relatively few cars because its service is not economical, and expects making it economical to remain a difficult, prolonged process.

“right so even Waymo and so on has very few cars and they're doing that roughly speaking because they're not economical right because they've built something that that lives in the future and so they had to like pull back future but they had to make it uneconomical so they have all these like you know there's all these costs not just marginal costs for those cars and their operation maintenance but also the capex of the entire thing so making economical is still going to be a slog I think”