You are saying that the cost to develop successful self-driving cars is 1-50 quadrillion dollars using an optimistic estimate of rail costs. That does not seem

You are saying that the cost to develop successful self-driving cars is 1-50 quadrillion dollars using an optimistic estimate of rail costs. That does not seem reasonable. Perhaps 200 billion across all companies have been invested in self-driving cars so far (I.e., Waymo is just a fraction of that.)