This is a great app. Whether unobtrusively checking on a young drivers speed or using it as a speedometer in your brothers old car with no instrument lights at night. The ability to record trip data is pretty cool.
I do wish there was an option to use it without the record feature. On a longer trip the amount of data that it tries to store when you stop the app causes the phone to "freeze" for a long time while it is doing something with the data
r4990 about Speedometer Maps and Tracks