“At some point ‘entropy’ takes over and it all falls apart”
Very true. Even at Galaxy scales. Mars had oceans and atmosphere.
At smaller scale, the notion of “sustainable” vehicles is utterly ridiculous. They wear out after 10 - 20 years and are scrapped. But weak, uneducated minds with zero sense of engineering are susceptible to ignorant non-scientific indoctrination. They blindly parrot the “sustainable” mantra without any basis for understanding what they are saying.
If cars, or anything else for that matter, were truly ‘sustainable’, then you would need to buy only one and it would last forever. Manufacturers don’t like that.
I once met and engineer that worked for a tire company and he told me that they could make a tire that would last for 100k miles or more, and this was in the early 70’s when typical tires would last 30-40k miles. But that would not be good for the company.............