On American websites that offer prizes there is usually a clause that states that the prize draw is only open to US residents. As there is no mention of this in your rules and because you are now an international site, I'm presuming that it is possible for a foreign member to win.
If this is the case then how does the prize find the prize winner. If a French member wins the Mini, do you order the prize from a French dealer? Or do you expect the winner to travel to the States and then pay the 2000 dollar import costs?