The Entity XF that is; yesterday when I was in game (PS3) I got a message from someone asking me if I wanted an Adder. I didn't understand their question entierly until they told me they could duplicate their own Adder enabling me to acquire one of them for my garage. I asked if they had the Entity instead, to which I was told they did.
Anyway, after having arrived at his location and watching him do his thing, the Entity I believe was suppose to be mine I couldn't access. I know the duplication glitch works (I've used it to rearange the vehicles in my garage) though I'm not sure whether the duplication works to the extend that you can give a super/sports car away to another player (not just to drive, but also to keep).
If the above does work as this other player was meaning, then would anyone care to duplicate an Entity XF for me? I'm not usually one to take advantage (of glitches), but I made up a fair bit of money myself, and then got the 500k from Rockstar. I've somehow reduced my income to around 50k. I'm online at the moment (PS3) using the same username as I am here.