In 2023, Elon Musk tweeted that their NN means Neural Network code, which was written in Python for faster development, now they are changing performance-critical code to C++.
Python still remained a dominant language in the Tesla automation ecosystem due to its simplicity and strong AI ecosystem.
Tesla Autopilot software is a curious topic among all software developers, Tesla does not build it on any open source system, but they built it all in-house.
When Elon became a decision maker in Tesla, Tesla already was one of the greatest engineering companies, but the autopilot was not introduced; it was introduced only after Elon started making decisions.
Elon hired Sterling Anderson for Autopilot development, and Tesla Autopilot began to gain shape
Sterling is an autonomous expert. After his younger brother was injured in a car accident in 2006, car safety became his passion.
Andrej Karpathy was also one of the people behind the success of the autopilot software