The redesigned 2023 Mercedes-Benz GLC-Class was revealed in June and soon the compact crossover will spawn its more rakish GLC-Class Coupe body style. We’ve already spotted a prototype for the regular GLC-Class Coupe and today we have a look at the fire-breathing GLC 63 Coupe from AMG. The regular GLC 63 is also out testing. We know this is the…