There’s an App for that, at least if you drive a Mercedes-Benz, which has teamed up with Hughes Telematics to offer a new system that lets drivers of the luxury cars enable “dozens of their vehicles features” - using an iPhone.The mbrace app lets you open and close doors, contact roadside assistance - even find your Mercedes-Benz in a parking lot. This system’s going to be included on all new Mercedes products, while existing customers with the car maker’s Tele Aid system installed are eligible to retrofit their motor with the new mbrace system ($280/year).Sascha Simon, director of advanced product planning at the firm said, "With mbrace, we begin the introduction of a whole new generation of innovative and personalized services that fit our drivers' mobile lifestyles, keeping the