Its just known as "The Parkway". People who've driven here know that 65 mph really means 80. When someone cuts you off, give them the horn AND the finger. Its okay. They're supposed to be used to it. People who hate are the stupid asses that don't live in Jersey who got their asses ran over by someone who actually knows how to drive.
And no one calls it the GSP.
Someone from another place: I'm going to drive on the garden state parkway.