All new Tesla drivers are being signed up for one big beta test of autonomous cars. On Wednesday, the automaker announced that every vehicle it produces will come equipped with self-driving technology. Many believe that self-driving cars are still a long way off, and that they need to be implemented with caution—especially after a fatal autonomous vehicle accident involving a Tesla this summer.

But the beauty here is that Tesla's self-driving technology won’t be deployed before it’s ready, and instead will be tested and improved with human drivers. The computer will run in “shadow mode,” which means the Tesla will track every decision or action taken by the driver, and compare it to what the computer would have done in the same situation. In this way, the computer will learn safe driving habits from the human behind the wheel, who’ll act sort of like a driving instructor.

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