Still unplayable, i'm afraid. It's better now as i don't fly off the track in light speed now, but the control still suck. It just stutters in some random direction...looks like as if it needs some sensor calibration or something. It behaves like old DOS games, when your joystick wasn't calibrated correctly.
BTW: Why are you making it so difficult to access it? Why don't you upload the apk instead of a zip?