text: When it comes to transport automation, control over the process, and the ability to halt or override it, is a chief concern. A system that controls itself and denies all outside input cannot sustain itself for long. That is why, to quote the passage, "Google cars are not truly driverless; they still alert the driver to take over when pulling in and out of driveways or dealing with complicated traffic issues." In short, the car is not perfect, and therefore has to fall back on the driver's help in some situations. This prevents crashes due to the car's incapability to surpass a unique situation on the road, as well as promoting driver awareness even when the car is operating itself. By doing this, the self-driving car model itself promotes safety and good road etiquette.