I'm in the middle of installing GPS tracking into my car using the following guide:
Though I'd like to build something a little more elegant. Ideally my solution will have a programmable GPS unit and a sim card (cdma seems better than gsm tracking), with no unnecessary hardware. I'm hoping this will help keep the size, power consumption, and operating cost minimized, though I can only imagine that something like this would cost more than the $30 phone from the guide without good ol' economies of scale. Do you know of any way that I can build something like this on the cheap?