This is one of the many things my dad did in his 40+ year career as an engineer at GM. I'm really excited to share this with him and grateful for such a write-u

This is one of the many things my dad did in his 40+ year career as an engineer at GM. I'm really excited to share this with him and grateful for such a write-up. A big thank you to the author, the person posted it here, and all those who upvoted it.