The Phantom is Jobuilt's tractor-trailer truck, a commercial-class semi that has hauled cargo in GTA IV, GTA V and GTA Online and is due to appear in Grand Theft Auto VI. Its classic American longnose design appears to draw chiefly on the Peterbilt 359EXHD and 379EXHD, with additional cues from the Peterbilt 389 and Kenworth W900.
Vehicle data via GTA Wiki (Fandom), CC BY-SA 3.0.