Los Angeles-based artist Ed Ruscha’s 1975 short film Miracle centers on a day in the life of an auto mechanic (played by artist Jim Ganzer), who has a transformative experience while working on the engine of a Ford Mustang. Actress and singer Michelle Phillips of the Mamas and the Papas plays his love interest. Since the 1960s, Ruscha has received extensive critical acclaim for his paintings, photographs, drawings, and books exploring the commercial vernacular of Los Angeles—its graphic signage,...