Except that the plug in on the vehicle is a female. That cables end is female also. This one should do it without needing an additional cable. Oddly they don't show a picture of the whole cable.
That's a cool product. You will still need a male to male 3.5 jack cable and of course a USB to lightning for a charger. Gets a bit clunky with everything connected. I would prefer it with a longer lightning cable end. I would hide the "Rockstar" behind the dash along with the charging connection and the 3.5 jack connections so that all that is coming out is the lightning connection that plugs in the phone. Since the Rockstar's cable is short you could use a lightning extension cable.