Here is some thing I posted way back on 08-01-2002. . I think the question came up in the FIRST Forum thread or something. I've actually seen a little demo of these things from Andy Baker. He brought in a demo kit to our shop and I think he was trying to get FIRST to use them or something. If you read down to kmcclary's post there is a little description of them.
PS. These things are really cool.
