sorry this is about gran turismo on psp i completely forgot to mention what game

hey guys if anyone could help i'd appreciate it

my father and i both got this game for christmas and we've been playing and we both have cars we want to send to the other so we went into the share thing and it said that all of our cars were succesfully copied but then the new cars weren't in our collections

are we doing something wrong or are the cars somewhere that we aren't aware of?

any help would be greatly appreciated