Where to next for John and the Pennys?

John was going to enjoy this, he thought, sitting in the back seat as one Penny sucked his cock, and the other drove them. Every girl who ever rejected him was going to become a Penny, and be his slut, but why stop there? Why not just convert all women into Penny's? Or everyone else? He had a decision to make... Convert his exs and crushes first? Convert all women? Convert everyone, leaving no loose ends? and where to start?