Won't work. Cell phones send audio signals and the remote sends RF signals...cell phone 1 near the distant remote can't receive or convert the RF signal, only audio, so it can't be transmitted to the cell phone 2 by the locked car, and even if it was, it couldn't be converted there to RF and then transmitted from phone 2 to unlock the door.
But Jim, have you run into this one?
http://www.snopes.com/crime/warnings/vin.asp