If you have a cell phone, "they" know where you are.

[HeiressofBickworth]

3. I've told this story before

but it is an example of the good/bad of cell phone tracking.

I was driving I-5 from Seattle to Olympia to have lunch with a friend. I got a flat tire somewhere around the south end of Tacoma. I called my friend to say I would be late for lunch, that I had a flat and I didn't know what I was going to do about it (hey, I'm an old woman and it's been forever since I changed a tire). She suggested I call 911 to get help. So, I called 911. I told the operator it wasn't an emergency but that I had a flat and was there some way I could get help. She said she could send a State Patrol car and the officer would help. I asked her if she wanted the milepost by where I was stopped. She said, "no, we already have you located." I was grateful that help was on the way, but a little freaked out that there was some way they had located me along the very busy freeway. I figured it had to be something about my cell phone.