In the raw, tender and surprising documentary, 'Old People Driving,' director Shaleece Haas gets into the passenger seat and asks, ' Can someone be simply too old to drive?' We get to know Milton (age 97) and Herbert (age 99) as they approach a grim milestone: the end of their driving years. And we learn the heartbreaking truth about the generation that came of age during America's love affair with the automobile: that they, too, must eventually sputter to a stop.