> that ECU and Infotaiment runs on different CPUs under different OSes. Question is, what do they share? Same bus? Some memory area? Or only something like I2C?

> that ECU and Infotaiment runs on different CPUs under different OSes. Question is, what do they share? Same bus? Some memory area? Or only something like I2C? That's not how auto engineering works. Read up on Controller Area Network (CAN)Bus. Tesla MCUs (Touchscreen) are on a completely separate sub-system from the power-train/braking systems. > I hope, Tesla's engineers better than that. Sure. Most of Tesla engineers came from other auto manufacturers. Lot's of them were form the UK during the development of the Model S.