Alright, where can i find a gamesave like that?Im not aware of any software for adding cars but there is a trainer or cheat tables you can utilise for both credits, wheel spins and various other tweaks.
I think the only way to get the unicorn cars etc. is to use a modded gamesave or through wheelspins. which in turn can really defeat the purpose of using software as the modded game saves can come pre loaded with a full bank and thousands of wheelspins, forza points etc.
Only way to get these locked PO cars is with a save aswell.