The sky in Houston is blue, with vague drifting layers of cloud. The freeways are empty and smooth, the buttresses adorned with the star of Texas. At two am we sit back in the cab, watching the city we used to know so well roll by. Christmas is coming, and the air’s humidity licks us through the open windows, borne on a warmer breeze than the one blowing fog past the windows of our San Francisco apartment.

With the gentle rolling up and down of 59 and then 45 we catch glimpses of our old neighborhood, passing under the bridges we used to bike across to the supermarket. The Sears building in midtown is still empty, still signed. I wonder how long it will stay that way, and who owns it. Theirs was a vast empire of real estate almost entirely disassembled. The tower in Chicago now bears another name, the huge flagship in Los Angeles is being converted to condos after years of an emptiness similar to that of this Houston store’s, sign lit but doors locked.

Further on, out west and headed south on 59, we pass one with the lights still on, the S alone the size of our taxi, a minivan. Modern and suburban, it is still retailing, but the shape of the building holds nothing of the company that built art-deco monuments to shoppers, built huge structures in the center of towns becoming cities.

We are in Texas for the holidays, staying with family, playing basketball in the drive, and relaxing. Taking time to think.

Thinking time is all too rare these days, coming mostly in commutes up and down the 101 to Petaluma. No surprise then that thoughts of automobiles, of the economy, of the cultural differences in driver’s education on the left and right coasts, and of abandoned buildings are foremost in my mind. No surprise that the Fit has become a touchstone for the later parts of twenty ten. Thinking time used to be something done in public, on trains, in airports and hotel rooms, in countries where I did not speak the language. Now it happens in a car without company. I spend more time on the phone.

The last week of the year holds as much time to think as I am capable of, offices lightly staffed or closed, friends out of town, gone home. The year unspools in reverse, accumulated memories flicked through, adventures ticked off on lists of beds and travel. Mostly though what looms is the difference from the start of twenty ten, where time to think was Monday morning, time to write an unavoidable aspect of the time everyone else spent in the office or commuting. Scattered moments, now, are spent editing and thinking. In the shower and at night I remember ideas and try to get them down before losing them to the office.

In twenty eleven I will make time again. Time to work out, time for friends, and time to think.