Demo Oddities

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In the demo that begins is you wait for too long on the title screen, I noticed some (two) oddities:

1. In the small snippet of gameplay shown for Blind Big Brother, the platforms in the power plant that go up and down are replaced with cubes.
2. At one point, it shows Homer driving the Obliteration Monster Truck in level 1. I know that this is possible with cheats, but still.
Cubes - obviously a placeholder, you can even see they're textureless
Monster truck - probably just a showcase of this truck, like: "Look, we have a monster truck in this game!"
Thanks. Is it possible to find these placeholder cubes in the files, or have they been removed entirely?