Tesla designed their model 3 from the ground up and it embodies some groundbreaking technology.
Professor John D Kelly of Weber State University in the USA has some great videos on its WeberAuto YouTube channel explaining the Tesla technology and other EV technology in clear terms with clear video of the unique parts of the car.
The YouTube Channel is here https://www.youtube.com/@WeberAuto/featured
Tesla Coolant flow
Tesla Heat Pump
Tesla Motors
Tesla Power Systems