Why Tesla Must Retrofit Four Million Cars

The technological evolution and competitive landscape of Tesla's self-driving hardware . While Hardware 3 has been officially deemed incapable of supporting unsupervised autonomy due to memory constraints, Tesla is introducing a series of iterative upgrades, including AI4.1 (AI4 Plus) and AI4.5 , to bridge the gap until the AI5 chip arrives in 2027. These updates focus on doubling RAM capacity and increasing memory bandwidth to manage the massive data flow required for vision-based neural networks. Despite these internal advancements, Tesla faces stiff competition from NVIDIA’s Thor processor , which currently offers superior raw compute power and modern server-grade architecture. Consequently, Tesla is navigating a complex transition that involves potentially retrofitting millions of older vehicles while shifting its most advanced future silicon toward robotics and data centers .

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Why Tesla Must Retrofit Four Million Cars is an episode from Elon Musk Pod by Stage Zero.

This episode is 00:15:31 long.

This episode was published on Apr 25, 2026.

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