dolsen:for a tracking system a 2nd hand iPhone 3gs will surfice as it will go missing with the car and they are quick at locking onjaymz: Thanks for the replies everyone!
Looking at phones that have true GPS not assisted GPS I have found that the price skyrockets! Not as cheap as I thought at all. I am looking at $400+ for a phone that will do it.
assisted gps is still true gps, just with a faster lock I thought.
Not sure how sensitive the gps receiver in a phone is, would be better with a dedicated unit I would have thought.