Drivers would be end users, Clients and project managers sometimes.
Think about it. Many drivers don’t know about checking the oil, maintaining proper tire pressure, tire wear, brake wear, air filters or topping off fluids.
I can do all of the above, but I’m nowhere near a mechanic. Just car savvy. So I could make suggestions to mechanics or engineers that look cool but are insane for functionality.
RTFM? Nowadays it’s a YouTube video away. Freaking legos.