Want to keep track of your car, kids, wife or whatever, well there are tons of solutions for this today.  I just read about one called www.inanny.de (www.inanny.dk for Danes), this seem to be quite an organized setup and thus perhaps more reliable than some of the discount solutions on the marked.  So if you are in the marked for some GPS tracking, maybe the www.inanny.desite is worth a visit. I how done no research into pricing (the unit seem cheap enough however ther may be some monthly fee or what not)..