I have a feeling that we will be seeing alot of these "Win A lambo", or "Win a Ferarri", or "Win a LandRover" threads in the next coming few weeks due to the huge popularlity that this thread has created. Basically it will be similar to the Bitcoin forked coins right after Bitcoin Cash proved to be a huge success.
And the problem will be that most of these will be scams, even though they can easily be legit if it ends up being run on a smart contract where the code can be inspected and then the company/person holding the contest can make easy %'s of the entire proceeds and all they would need to do is buy the car and deliver it to the winner. Not rocket science.
However these raffle are easily going to be turning into scams since people just want to make a quick BTC and disappear with the funds.