four o'clock
He tooled the electric runabout up into the third level , purred out across state at an effortless two hundred , then descended via a cloverleaf to ground tier and entered a maze of subsidiary roads that led through the summer countryside . In this manner he drove the major part of the afternoon . Travel was light , away from the elevated lanes and he enjoyed himself . At four o'clock he began to look for a convenient place to turn around . It was then that he sighted the roadside stand ahead . Above it a freshly painted sign read : TV SETS . LATEST MODELS .