ok, there might be one thing here, my mate actually has 3 infernus'. Duna if he is chattin it, but if its true he said to me )and i agree with this bit) that in all gta games, whatever car you get in loads of that car start spawning. So my mate got into his infernus, waited in the same spot of his safehouse, and he saw another infernus pass by. So he quickly got out of his (it was still in the safe house parking place,) and jacked the other dude and stole it. He done a simular thing for the other one. But unlucky, you won't be able to do that.... I have heard from other peeps that it spawns sumtimes in alderny. I doubt it though.