Guys, I've been working on tidying and cleaning up the iPhone App, and am now looking at the Location tab. First thing I've done is revamp the code to handle location changes and support car bearing. I've also done an interface for social groups, and tidied up the object model for all this. The last step is to enable the display of cars for selected social groups. I've put a couple of youtube videos up to show what it looks like: http://www.youtube.com/watch?v=l6DmRPfX3_8 http://www.youtube.com/watch?v=YxN16qN7h5E I'm interested in your opinion on the car image used. The problem is the rotation of the car, and the image perspective we use, leads to some strange upside-down appearances. I tried changing to the top-down car (as used on the "Car' tab to show TPMS, etc), but it really doesn't look nice. What do people think? Is it ok without re-doing a whole new set of images? Regards, Mark. P.S. The demo is done with a car called RALLY. The data comes from last summer's round-Hong-Kong-rally. We took GPS data from the Alpine head unit, with location streamed once every two seconds, and play it back as if a car is driving it (with car bearing derived very roughly as the bearing between the location now and the location 2 seconds ago - so it is a bit jumpy). Real Tesla Roadsters seem less jumpy on the direction (I guess they smooth the GPS data over more than 2 seconds). You can see another visualisation of the round Hong Kong rally data here.