I used to work at Toyota as a salesman, it was a shitty job. I averaged like 8 cars a month, My highest month I sold 15 cars, but that's a once in a blue moon thing. I remember they were pushing for education on sales, the guys that did well usually took 1 or 2 extra lessons a week of their own time.
Also, New cars netted me pennies, all my income came from used cars, there's usually 2-3k of marked up prices in them, depends on how much the dealership bought the car off that sweet old lady for. I once sold a used Prius for 15k and it netted me $1500ish in commissions, but if i sold a brand new $35,000 Prius without any negotiating, id' get about 400 bucks.
so yea, don't be so hard on the sales guy on a brand new car, there's really nothing in them, but on a used car, go batshit crazy!
^ this is basically how i sold cars lol