I worked in the automotive space (CAD/CAE/CAM) and there was tons of code that had commit headers starting in 1996 - the year they moved the previous code base

I worked in the automotive space (CAD/CAE/CAM) and there was tons of code that had commit headers starting in 1996 - the year they moved the previous code base into that particular VCS. Plenty of files had less than 10 commits to them since. They still had some FORTRAN in the code base. According to my coworker who worked there for 25 years, his first project at the company involved the initiative to replace FORTRAN with C. So yeah, there's plenty of C code hanging around that's not going anywhere.