This line became infamous among the GTA IV multiplayer modding community, many of whom don't use a save game and therefore heard this line every time they launched the game.
The optional task 'Better than CJ' is a reference to Wrong Side of the Tracks in Grand Theft Auto: San Andreas which has CJ riding a dirtbike and chasing after a train, very similar to what Trevor does.This boat is called the Octopus and is also from Liberty City. The Platypus' sister boat appears docked in warehouse area of GTA V.If you head into the bar where you can play Darts near Sandy Shores you'll notice a familiar face on the bank notes behind the counter.