Cellphone remote start for cars

Dave decided to make good use of his spare time by working on a cellphone activated remote start for his vehicle. This is made possible by connecting the vibrator motor which leads to a headphone jack, where that signal will be able to activate the remote start simply by setting off an extra fob. Interestingly enough, he doesn’t need to manually start his car all the time remotely, as he can always set alarms or repeating calendar events to do so. Now if only he managed to find a way to not only start the car, but have it drive up to his doorstep by itself without knocking pedestrians over ala Grand Theft Auto style.