Both.. I know it normally takes 9 hours to travel the 500 miles to my sisters in TNN but I do it in 8. I've had to learn exactly how many miles it is from the interstate to the road my job is on, and then from that intersection to the plant simply because I have to give directions often.

I don't use miles when selling BPs locally though. I just tell people who are picking up from me or meeting me which interstate I'm off of and go from there. Miles make no sense where I live. It's suburbia hell.