I know this has probably been posted before (should give you a hint), but it would be extremely useful to be able to see a live speed on the app. For example, if a family member borrows my car and I'd like to see how fast they are going. Or like many people have suggested, being able to go back into my trip history and check my speed. It seems like the device is already receiving that data anyway, so why not do more with it. Your sales would skyrocket.