I like a certain unremarkable car from the recent past. As they are repairable currently, can one just buy all of the parts new and put it together?
Are there any parts that aren’t sold new?
Have you done this?
Are there any tools to help one get all of the parts?
Any communities?
No, absolutely not. Even if you could buy the 30-50,000 parts individually, the markup alone would absolutely kill the feasibility, much less the ability to weld the frame components together, assemble the literal miles of wiring, or program the computers.
That is a good point.