Why does Peterbilt name its truck 379?

what does 379 mean with the peterbilt 379?Why does Peterbilt name its truck 379?
The 379 was Peterbilt's flagship truck from 1987 until the 2007 model year maintaining the nameplate's signature long-nose styling. Available in standard (119" BBC) and long hood (127" BBC) lengths, the 379 is the last conventional over-the-road truck available with an aluminum hood. Replacing the "359" in 1987, it remained in production until March of 2007 with the last 1000 379s called the "Legacy Class 379." The 379 family received interior changes through the 20 year run, like the "Square Dash" from 1987 to 2000, the "First Rounded Dash" from 2001 to 2005, and the current "New Rounded Dash" currently only available in Arctic Gray or Saharan Tan. Peterbilt dropped the long running "American Class" interior in 2005 with the end of the first "Rounded Dash". The main dash color was black, up until the "First Rounded Dash" was available, you could either order it in gray, tan, or black. Currently Peterbilt does not offer the "New Rounded Dash" in black. Peterbilt also made changes to the cab doors in late 2004 when the vent window post was eliminated and the mirrors moved from the door to the cab. (Interestingly the "original cab" from Fageol had no vent windows and thus a retro look was achieved). The passenger door received a much larger peep window. New door release handles and locksets replaced the 1972 units. The 2005 models had a flat door window lower ledge. For 2006 and 2007 the doors received a new window with an angled-towards-the-hood lower ledge allowing for additional visibility, especially to the right. Rear corner windows also became available. The new for 2005 cab mounted mirrors allow for enhanced view and allow the driver to keep his view facing forward without leaning to see the mirror. The rear window of the cab saw changes from the original 36" x 28" window. The Unibilt Daycab window size became standard around 2003.Why does Peterbilt name its truck 379?
Just a model number/name, no significant reason for it. Anymore than "fairlane" means anything with Ford.Why does Peterbilt name its truck 379?
its just the model number thats all no other special reason