Tesla has started to introduce the latest beta version of its Full Self-Driving system to owners that have perfect safety scores.

The car manufacturer determines safety scores for its owners be analyzing their driving behavior. Owners lose points for things like hard braking, unsafe following, aggressive turning, forward collision warnings, and forced Autopilot disengagements. It’s not easy getting a perfect score, so much so that Elon Musk says there are only around 1,000 drivers with a 100/100 safety score over 100 miles.

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Tesla has only been using this safety score for the past two weeks. Previous beta versions of its Full Self-Driving package have been limited to roughly 2,000 people, most of which are Tesla employees or diehard owners that want to double as beta testers.

Despite how Tesla markets the system, it is still considered a Level 2 self-driving suite as it requires supervision at all times.

“Full Self-Driving is in early limited access Beta and must be used with additional caution,” Tesla said in a email to customers inviting to download the latest version, according to CNBC. “It may do the wrong thing at the worst time, so you must always keep your hands on the wheel and pay extra attention on the road. Do not become complacent. When Full Self-Driving is enabled your vehicle will make lane changes off highway, select forks to follow your navigation route, navigate around other vehicles and objects, and make left and right turns. Use Full Self-Driving in limited Beta only if you will pay constant attention to the road, and be prepared to act immediately, especially around blind corners, crossing intersections, and in narrow driving situations.”

Musk says the beta program will eventually expand to those with safety scores of 99 and below.