All the Peterbilt's are built in Denton, Texas. I've known a number of people that work there. Pretty cool company.
They are indeed, they throw a get together once a year for the Pete worshipping faithful, invitation only... they really roll out the welcome mat, kind of a hall of fame thing. You don't have to buy a fleet of Petes...the owner operators that run and beautifully maintain the classics are honored just as well.