it is possible if you create more acounts from your ps3menu.
you have to fill the form and provide e-mails(fake is ok, no confirmation mail is send to them from psn).
i dont know how many acounts you can have but i have 4 now.
Also if you do that make each acount with todays date as birthday, only change the year to ex (first acount 21/2/67-get the classics gift, second 21/2/85 - get the old rally cars gift, third acount 21/2/92 and so on...)
you will have more acounts to trade and some sweet birthday gifts.
if you dont like the car you get (assuming you have saved at the point you get the ticket to a usb stick), quit game and reload until you get the car you like.👍