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Consumer Reports found that Tesla did the best lane keeping, with Audi, Cadillac and Lincoln almost as good. Autopilot also scored best for ease of use, with 7 of 10. It ranked second with 57 points, behind Cadillac's Super Cruise with 69. It scored 3 of 10 for keeping the driver engaged and 2 of 10 for making clear when it was safe to use. Consumer Reports notes that Tesla changes its software often through over-the-air updates. The tests measured system behavior and no crash outcomes. Consumer Reports does not describe Autopilot's software. 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Tesla wrote in 2020 that it trains deep neural networks for tasks from perception to control.","replication":{"produced_by":["Consumer Reports tested Autopilot on a Tesla Model Y with adaptive cruise control and lane keeping engaged together.","Each system went through 36 tests on a 327-acre track and nearby public roads between June and September 2020.","Consumer Reports judged how well each system kept the car in the center of the lane and adjusted its speed behind other cars."],"must_hold":["The road has lane lines that the system can follow, since Autopilot shuts off with a loud alert when it lacks road information.","The driver stays ready to take over, since none of the systems reacted well to construction, potholes or objects in the road.","Tesla's over-the-air updates may change how the system behaves after the tests."],"echoes":[]}}},"provenance":{"kind":"legacy_record","basis":"Editorial assignment.","record_fields":["account","replication"],"source_refs":[]},"review_state":"record_mapped","coverage":"partial"}},"summary":{"total":91,"addressed":91,"known":27,"reviewed":2,"reviewed_complete":2,"reviewed_partial":0,"record_mapped":25,"review_not_assessed":64,"not_assessed":0,"complete":false,"by_state":{"value_present":27,"not_reported":0,"unresolved":64,"not_assessed":0,"not_applicable":0,"withheld":0,"source_unavailable":0}}},"presentation_version":"463cebd4fe7a3bdd9e6b77ac23b176cedc23b2a9c833bc069dd0edf594cfcd57"}