Actually this is a lambo prize, so it should be one the winner decision, whether he is going to take the lambo or money instead. And to think that freebitco.in openly said that lambo is the main prize, they should prepare everything either it is a lambo or btc prize equivalent
It was already in talks few pages back and quin saids they are open to pay BTC prize equivalent if the winners chose to do so. More like a $200k USD worth of BTC.
And everyone prefer to get paid in cold hard BTC coins

Due to tax and maintenance issues
Well why would we keep a luxurious car if we couldn't really afford it and it is not suitable for our life style.
It is only wise to have it on BTC to spend it more wisely to make your life better buy a house invest or open up a business until you could afford to buy one for yourself.