The Escala Concept debuts in California tonight, introducing the next evolution of Cadillac design and previewing the craftsmanship and technology being developed for many future models. Following a series of private previews, Escala will be displayed this weekend at the annual Pebble Beach Concours d'Elegance. The Escala Concept previews the design and technical ideas driving the next phase of Cadillac's ongoing expansion. "Escala is a concept with two clear objectives," said Johan de Nysschen, president of...