I dunno, I took delivery on Jan 18th and I'm at 12,272 miles as of right now. Granted of you lived on base and drove 3 miles to work your mileage is going to be way down but doesn't the CBS see lots of short trips and then move the interval up? If it's only about time spent on the highway then it's a pretty worthless system.
Having said all that my post was almost entirely in jest. I even remembered the smileys.