Safety test results mixed for some cars with auto-pilot features

There are mixed results on safety tests for vehicles with auto-pilot features.

The Insurance Institute For Highway Safety focused on adaptive cruise control, lane-keeping, and automatic braking.

The IIHS tested both the Tesla Model S and Model 3, plus a BMW 5 Series, a Mercedes-Benz E-class, and a Volvo S-90.

The Tesla Model S had problems staying in its lane, and both Teslas ended up hitting stationary objects in front of them.
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