Those are really good! Are they 3DS? How long did they take to model? What did you use as a reference, just a picture?
I'm a senior, but this was my first year helping with the animation (my younger brother has been doing it). I modelled the 2004 FIRST field in POV-Ray, and later transferred over all the measurements into 3DS for our animation. (The POV-Ray still renders are better though.) I've seen better models of the field in some of this year's animations, but I think ours is pretty good. Here are some high-res stills:
http://www.plainedgeschools.org/hsrobotics/3dfield/
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MIT Mechanical Engineering
>> College Mentor,
Team 97: Cambridge Rindge and Latin School with The Edgerton Center, MIT Mechanical Engineering, Bluefin Robotics, and Draper Laboratory
>> Alumnus, Team 527: Plainedge HS