“So if we take this car, and the car is a 7-year-old car, maybe it was a nice car then but it has been driven a lot over seven years,” Satter said. “We’ve just loaded the car with a lot of passengers. And we’re expecting the car to drive 10 times as fast as it was built. And so we occasionally have to car take the car in for a pit stop. It’s longer than we would like. But we would rather make incremental investments in the infrastructure of the system now than have them over-promise and under-deliver.”