Eh, my dad used to be a mechanic, he always checks the tire pressures before he goes to work. (Just to be safe)
Most idiots dont even know how to plug a hole in their tires. A friend of mine, his parents would just buy a new tire any time there was a hole in it. Now, I fix em up for 10$$ for each plug.
well, i wouldn't call em idiots. it's not their job to know how to plug a tire.
the only knowledge i expect to see is that the driver can check and add their own oil, keep tires some semblence of properly inflated, and not run out of gas.....ooo.....and coolant topped off. that should be basic knowledge to drive.
other than that, if you want to know how to do it, more power to ya. if not, at least ya know some basics.