Good idea, but both the free and pay versions suffer from erratic display data. The speedometer jumps all over, but particularly the graphs -- which I could come to love if they worked -- dont scroll to the right, but continually decrease scale, which on a longer trip just compresses all the data points so close together as to be meaningless. There needs to be a way to set the scale and have the setting hold between application uses.
banished about V-Cockpit GPS Lite - All in one (Compass, Altimeter, Speedometer, HUD, ...)