Sadly, (as I'm sure you've experienced dealing with car salesmen) a lot of them don't have a clue. I've worked with enough.
It's when a customer is asking has it got x y and z and the salesmen will just nod along going yep, yes, yeah.
But that being said, rarely do you get people come in (at least at Honda) knowing anything about the car and options, performance etc.
I was always vert good with my product knowledge, and if someone would ask me something I didn't know, rather than just bullsh!tting, I would always be honest and say I don't know and we can learn together. Always seemed to work.