Exactly why I could never be a salesman! It's true that in most cases where people work as salespeople, there is a required level of dishonesty that one must have, or they will fail in their attempt at being a salesperson. And that's especially true when selling cars!
Once when I was between jobs, I saw an ad for a Mercedes dealer, a really posh place they have, and I applied, thinking that I could sell Mercedes without having a bad conscience at day's end. Well, I didn't even make it to an interview, but I later learned that Mercedes has like the worst record for cars that require the most mechanical attention. I was glad I never got that job!
Haha agreed I could not be a salesperson either. I have two derogatory terms I use to refer to white trash one is a neighbourhood by me which if I say you are from there then you are trash, and the other is car salesman :)