I am at school (college) with a T3 connection and all this stuff is served directly off my desktop computer. Since it is Win98, it's not up ALL the time, but I definately leave the computer on 24/7. However, I highly recommend you download what you like - just because.
PS. Make sure you look through all the directories. There is tons of awesome stuff if you've got the connection. For example, one guy mounted a camera in his E36 M3 and drove around a road course for 5 or 10 minutes and edited the movie (dubbed cool background music in and stuff).
This particular one is
Br52601 - E36 M3 Road Course.mpeg and it's 125MB but worth it
Man I am getting a lot of traffic on my webserver!
EDIT/FYI: Any of the Top Gear ones in the root directory are worth downloading.
Kevin, don't forget that WPI doesn't want us hogging too much bandwith, you might want to limit the download speed, a couple kids I know got in a lot of trouble for serving websites with too much traffic (and they weren't porn).