Wall-E to be renamed Hipp-E?

In case you didn't see the side link for the new Wall-E trailer, the new Pixar movie seems to be moving in a very environmentalist direction. It seems the robot is tasked to clean up all the garbage on Earth, and a space ship lands pretty much on top of him. The trailer shows how he hitches a ride as the ship leaves, barging through an orbiting cloud of junk.

Clearly, this ship must be from the new colonies of humans, come back to see what has happened to the Earth they abandoned. Perhaps Wall-E's 700 years of picking up trash will help them learn that their ways still haven't changed, and there's no time like the present to be environmentally savvy.

While this is but my expectation of the film's premise, I've been known to be wrong (the Incredibles) or at least enjoy the ride (Cars) with Pixar movies.