Boy do I have some surprise for you about a modern car…An older modern car has about 4 ECUs. Usually with multiple SoCs in each ECU either for FuSa reasons or performance reasons. Comparing a modern consumer product with the Apollo 11 machine is illogical. The Apollo compute system had a ton of custom analog circuits (understandably so). Loading hacker news which is predominantly text based requires more memory than what they had in the main compute module (4 kB).