From the main menu of the game, select Options. This will bring up a notepad with more menu options. Select Credits, and watch them scroll up from the bottom. About 5 seconds after the last credit disappears from the screen, a line will scroll up sayng...
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1. Choose the bus
2. When playing, look in the back
3. It's the development team, see them? What a motley crue!
4. Also, all the i76 easter eggs work on Nitro as well.