It seems well documented that the Tesla system is at level 2.
and it requires "hands on supervision".
Has Elon lied about the capabilities?
Yes, on many occasions.
Crashing your car to prove it seems lilke a waste.
When the documentation is clear.
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Tesla Autopilot is an advanced driver-assistance system (ADAS) developed by Tesla, Inc. that provides partial vehicle automation, corresponding to Level 2 automation as defined by SAE International
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https://en.wikipedia.org/wiki/Tesla_Autopilot
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Drive Autonomously: No manufacturer has achieved Level 4 or Level 5 autonomy for road use. Tesla has not achieved Level 3 conditional autonomy like Mercedes-Benz’s DrivePilot system. A Tesla cannot drive itself. The driver must remain attentive at all times. Tesla now qualifies Autopilot and Full Self-Driving with a (Supervised) parenthetical on its website.
Tesla’s Level 2 system is a hands-on system that requires the driver to regain control immediately. Torque sensors confirm the driver’s hands are on the wheel or yoke.
Level 2 Driving on City Streets: Tesla does list Autosteer on City Streets as a feature of Full-Self Driving. But notably, its website provides no further
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https://insideevs.com/news/742295/tesla-autopilot-abilities-...
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In a statement addressing the US recall, Tesla declared its technology is a ‘Level Two’ semi-autonomous driving system – not the more advanced ‘Level Three’ system which is already being developed and rolled out by rival car-makers.
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https://www.drive.com.au/news/tesla-full-self-driving-level-...