The Comand online Nav units allow you to navigate a pre-planned and saved route. This is a great feature if you go on motoring holidays because most people never want to take the shortest or quickest route, but rather a pre-planned scenic one, with perhaps some interesting stops along the way. Google maps used to allow you to plan a route and send it to the car (albeit someone complicated to do) but the new Google maps has dropped this feature and you can now only send a single waypoint, so no more routing . Anyway, I really wanted to be able to do this as having well-planned routes all preloaded into your car before you set off on holiday really makes for a relaxing time. So, having given up on Google, I've written a small program which converts a .gpx file (currently tested with Garmin format) into a Mercedes Comad formatted .gpx file. Basically, this allows you to pre-plan your route in Mapsource or Basecamp (a Garmin mapping program which is pretty easily found on the net) then convert the file into one you can save to your SD card, pop it into your Comand Nav unit and hey-presto, the Comand unit then let's you navigate the precise route you created on your PC, so you can pre-plan all your routes before you go . It's at V 1.0 stage, which means it'll only convert a single route at a time (the next version with convert gpx files with multiple routes in) so if this means something to anyone and they'd like a copy just message me and I'll send you one.