Yes there are, but my understanding is that they produce something akin to powdered metal for creating prototypes. No way that they can print something as complex as a car engine. Not yet at least.+Andrew Lloyd
According to the original article from Wired.com, they give two examples of advantages:
1) The bumper: "it affords the precise control that would be impossible with sheet metal...the printer can add thickness and rigidity to specific sections. When applied to the right spots, this makes for a fender that’s as resilient as the one on your Prius, but much lighter."
2) The dashboard: "when he prints the car’s dashboard, he’ll make it with the ducts already attached without the need for joints and connecting parts. What would be dozens of pieces of plastic and metal end up being one piece of 3-D printed plastic."