On the subject of salespeoples' knowledge....My SVT dealer also sells Jaguars, so I wandered over to the showroom one day to check out the X-type (very nice, I thought).
Anyway...I was amazed at how much the salesguy knew, not only about the Jag, but about the SVT Contour...he was comparing curb weights, horsepower and torque numbers, how the Duratec V6 in the Jag differs from the SVT, and more.
I was very impressed.
