Inside the Lines: American Muscle: Adult Automotive Coloring Therapy

As it turns out, you don't have to fill pages of mermaids and fairies in order to get the therapeutic benefits of coloring as an adult. To prove it we set out to create some of the coolest coloring books in history featuring the worlds most iconic and rare automobiles, motorcycles, and other grown-up toys for enthusiasts from all walks of life. In "American Muscle" we explore an era in US car culture that sparked the original horsepower race with some of the most iconic, rare, and powerful ...