When Tesla s Autopilot software works well, it s truly a remarkable experience and a prime example of advanced technology fundamentally changing the way we live.

But contrary to the misadventures all over YouTube, it s not a fully autonomous car, and the beta software is still supposed to have an attentive human driver.

That s not going to change any time soon — even computers need practice, and Elon Musk has now said that Autopilot will remain in beta until a billion Autopiloted miles have been driven.

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In just the last two weeks, we ve heard reports of at least three Tesla crashes where the car s Autopilot software was engaged.

In one particular accident from this past May, the driver of a Model S was tragically killed when his car crashed into a tractor-trailer.

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