A twelve-lane behemoth cutting through the least scenic parts of the Garden State, the New Jersey Turnpike may lack the romantic allure of highways like Route 66, but it might just be a more accurate symbol of American life, representing the nation at both its best and its worst.    When Angus Gillespie and Michael Rockland wrote Looking for America on the New Jersey Turnpike in 1989, they simply wanted to express their fascination with a road that many commuters regarded with annoyance or indifference. Little did they expect that it would be hailed as a classic, listed by the state library alongside works by Whitman and Fitzgerald as one of the ten best books ever written about New Jersey or by a New Jerseyan.    Now Looking for America on the New Jersey Turnpike is back in a special updated and expanded edition, examining how this great American motorway has changed over the past thirty-five years. You’ll learn how the turnpike has become an icon inspiring singers and poets. And you’ll meet the many people it has affected, including the homeowners displaced by its construction, the highway patrol and toll-takers who work on it, and the drivers who speed down its lanes every day.