Protip: GT5 doesn't have a trade option. We can't trade cars. All we can do is gift them. I gift you a car and maybe you gift one back, but that isn't a trade. That's mutual gifting. I don't even have to lose my car in the process, as I can just back up my save, gift the car, and then restore my save, if I want to cheat like that, so really we would just be duping cars for each of us.