Eye on the Future 2020, the Maricopa County Comprehensive Plan, provides a guide for decisions concerning growth and development, and considers strategies for addressing growth-related impacts. Among the strategies is the creation of scenic corridors for unique roads in Maricopa County. The Carefree Highway area is one of these roads, and thus the Carefree Highway Scenic Corridor Guidelines are established to help enhance this area’s special characteristics.

Arizonans have been divided in their feelings about growth and what to do about it, especially during the past two decades. To complicate matters, the debate over the best responses to growth has been drawn along overly simplistic lines—the economy versus the environment. Arizonans who follow the myriad issues related to urban growth closely are becoming convinced that the discussion needs to be recast in a new light.

Scholar Leo Marx coined the phrase “the machine in the garden” in 1964 to describe the relationship between nature and technology. Considering much of the writing about Arizona’s growth, it seemed an apt title for this volume of Arizona Policy Choices. "The Machine in the Garden" presents growth policy choices for Arizona along a continuum: Yesterday’s Growth—the policies that have been used in the past; Today’s Growth—the “smarter” approaches from around the country; and Tomorrow’s Growth—cutting edge thinking about the economy and experiments in urbanism and governance.