Meet the most powerful Mercedes-Benz SLK yet. It’s the new AMG iteration of the folding hard-top equipped roadster, and gets a clean and clever naturally aspirated engine. That means it mixes ...

What is it? It's getting a bit long in the tooth, but can Mercedes's SLK55 AMG, the entry point into high-performance Merc ownership, still hack it with today's best roadsters? Like the bulk of ...