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- Tesla slashed the price of its assisted driver software, FSD Supervised, from $199 to $99 a month.
- Elon Musk once said the cost of Tesla's FSD would only increase as it improves.
- The discount comes after Tesla missed earnings expectations for its first quarter.
Tesla announced a price cut for its assisted driver software on Friday amid lower-than-expected vehicle sales for the first quarter of 2024.
A subscription to Tesla's Full-Self Driving software — now called FSD (Supervised) to remind drivers that the system requires their attention at all times — is now being offered for $99 a month, down from $199 a month.