I think what's more worse than a car salesman is the hot chick they bring in to explain to you the 'additional options' you can add to your vehicles.
When I bought my girlfriend's AH Astra from Berwick Kia, they pulled out this leggy blonde in her daughter's top and the tightest skirt to explain to me about the Parrot Bluetooth kit, 16" Alloys, Parking Sensors and Darkest Legal Tint.
Financially, I did the right thing, and said no to all of them (they were all like 50% more expensive than if I bought them elsewhere), but other than that, I wonder what could have been......