Dan, that thing was fun! One of the first times driving in was with the cheerleaders during practice. I don't know if it is still in service though.
Our team has taken apart a couple of robots (2005 and 2007). We recently went through and have brought all other robots to operational status (2006 and 2008 robots). After getting them to work, we created directions for operating them and then put them into the coaches garage attic until they are used again. Our idea was sort of archiving them so we know that what we put up there works and if students in the future bring them down to use them for demos or any other reason, directions will be there as over the years few members know how to operate them.
Keeping old robots is definitely a good idea. Demos for sponsors and recruiting are nice and the fact that prototyping in some games gets some what easier when you already have a robot that plays a similar game.