The NHTSA is investigating nearly 3 million Tesla vehicles over concerns with Full Self-Driving.
Interestingly, the Department of Government Efficiency, once led by Musk, allegedly cut NHTSA staff devoted to self-driving safety.
Musk acknowledged the challenges of perfecting self-driving tech, citing the "march of the 9s" concept, where it's exponentially harder to move from 99.9% to 99.99% perfection.
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Author's summary: NHTSA investigates Tesla's Full Self-Driving feature.