I've seen guys with GPS? systems that are as small as cell phones, that track there top speeds etc. Where can I buy one?
Sorry if I don't know what I'm talking about, but I am confused about this.

If you are interested in handheld gps systems take a look here (http://www.pocketgps.co.uk/handheldcomparison.php) If you own a fairly new PDA you can use a search enging and find attachements that will give it gps ability. As for where to put it, I suggest checking out bugman's (http://81x.com/bugman/gixxerprojects) website and click on the radar detector link on the left hand side. That is what I plan on doing with my Garmin GPS 72.

Hope that helps. Feel free to pm me if needed. I used to be a navigation ET on submarines so I've worked with a gps a bit. http://www.gixxer.com/forums/images/graemlins/thumb.gif

I just picked up a Garmin Forerunner 301. I plan to use it for keeping track of lap times on track and see the routes of my many rides. It's ment to be used as a way of training when running or biking; though I think it will work great for what I want.