It’s a gray day (not like this photo), flecks of rain on the pavement, when I rush out the door. I grab the newspaper, jump in the car, buckle up — and I’m gone. There’s the familiar route down Fox Mill to Vale to Hunter Mill.

I know every curve and hill of these western Fairfax lanes. I know where the school buses stop, the garbage trucks too. It’s 17 minutes of twists and turns that make me feel as if I’ve come down the mountain. And in fact, the route once took hours instead of minutes.

But today’s trip was different — though I was three-quarters of the way there when I realized it:  The next time I take public transportation downtown I will most likely be riding the Silver Line. I will be leaving from Reston, not Vienna. I will drive different roads — or maybe not drive at all.

I can still ride the Orange Line, of course; no one will stop me. But will I want to when the Wiehle Station is half as far from home?

It was a poignant moment, even at 6:20 a.m.