In a recent series of statements, Elon Musk has emphasized the limitations of older Tesla models regarding full self-driving capabilities. He admitted that millions of Tesla vehicles equipped with the HW3 chip will not be able to achieve unsupervised Full Self-Driving (FSD), confirming that an upgrade is necessary for true autonomy. To address this, Tesla plans to construct microfactories dedicated to retrofitting HW3 cars. The company has provided details on the upgrade path and announced that FSD version 15 will run on the newer HW4 system, which features doubled memory. These developments come amid concerns over delays in robotaxi expansion and a cautious tone from Musk during recent calls. Tesla aims to support frustrated early adopters while navigating the challenges of hardware and software capabilities.