RPM Motorcars, LLC sells and services Ferrari, Mercedes, Porsche, and other high-end vehicles. Schedule an appointment today by calling (818) 646-0201. Let's get you out on the road in style! RPM Motorcars, LLC sells and services Ferrari, Mercedes, Porsche, and other high-end vehicles. Schedule an appointment today by calling (818) 646-0201. Let's get you out on the road in style!