Watch on Soap2day. Once a vibrant part of American culture, drive-ins reached their peak in the late 1950s with almost 5,000 dotting the nation. Although drive-ins are experiencing a resurgence, today less than 400 remain. In a nation that loves cars and movies, why haven't they survived? April Wright's lovingly made documentary, filled with archival images of hundreds of open and closed drive-in theaters, interviews with theater owners, operators and cinema luminaries attempts to answer that question.