Most car salesmen are clueless as are most customers until you get into specialty cars then the customers become much smarter. Or, sometimes customers just do their homework and know what they are looking at when they go to buy. I'd bet you could ask 10 people on the street weather they would rather have a 2014 Vette or a C7 Vette and they would think there's a difference.
I was looking at Jeep Grand Cherokees in late 2001 and was walking through a Jeep dealer lot and spotted one that caught my eye. I asked the salesman if it was a 6 or a V8. He said "It's a V6". I said no it's not, they don't make a V6. He insisted they did. I decided not to argue with him. I know *EVERYONE* here knows the Jeep 6 was an inline 6 back in those days, right?
I'll bet there are a lot of people that don't know the difference between an inline 6 and a V6.