I've driven through central Pennsylvania on U.S. 15 and I-83 at least a dozen times in the last year, mostly from Rochester to Baltimore and back, except for the last time, when I didn't go back. Much of the route (Williamsport to Harrisburg) follows the Susquehanna River, which is quite scenic, except for a couple of clumps of fast-food restaurants and one sparsely-populated stretch from roughly ten to roughly twenty miles north of Harrisburg. It contains no towns of any size, only a few dozen houses, one motel, two gas stations, and (when I first drove it) three porn stores. That seemed a bit excessive. On my second-to-last trip in May, I noticed that a fourth had opened along the same ten-mile stretch of highway. On my last trip a month ago, there was a fifth, and none of the others appeared to have closed up shop. To judge from Rand McNally, the area contains no towns of any size set back from the highway and the river. So what's going on? Are central Pennsylvanians the loneliest, horniest, most voyeuristic bastards in America, or what?