I used the rss feed from flitsservice.nl - a Dutch site where mobile speed limit checks are reported - as the datafeed for my first MashApp.
After manipulating the content from the feed, it was easy to show some nice graphs in order to understand where and when the radars were hidden along the Dutch highways. Once the available maps are extended to the Netherlands, I will post an update of this app that any consultant in the Netherlands will need ;-)
Have fun!
Gerard