Who is going to buy the Lamborghini ? Wetsuit has done a good job by hiding his/her identity and once you walk into a Lamborghini dealership, all anonymity is gone. They will have to do a transfer of ownership and also a lot of paper work to finalize this purchase.

Will you arrange that the "winner" deal directly with the dealership and paper work and then only do the final payment when the "winner" is invoiced to do the payment?
The actual purchase process might dox either the winner or the owner of Freebitco.in.

My bet is that 99% of people will take the bitcoins and leave the lambo. If you really wants the lambo you can buy it with the bitcoins won, the problem with the Lambo is the Gas and right here the price is 1.5 /L, those beasts drinks a lot.