You are tooling along the superhighway when the signs suddenly begin to snap up before your eyes. You want to get off at the interchange. But where? There it is -no -yes -better hurry -and you spin into the cloverleaf with the sickening feeling that you're probably wrong and doomed to go miles out of your way.
The brand-new Pook's Hill Inter change near Bethesda, Md., is different. There you can be absolutely certain that you're wrong. They left out half the exit ramps.
At Pook's Hill, Washington's new four-lane Capital Beltway, which circles the metropolitan area, intersects the...