Still I think it depends on the winner and at the same time that we are talking about the majority of the public, who are not rich enough to get a Lambo, from tax purposes to signing over fee to many other stuff, it would cost a lot but also it is a Lambo so it is still quite free, whatever you are going to pay will not be remotely close to what Lambo would cost you to buy, so it is still almost a free Lambo for sure.
The only people that would prefer a car over cash are people that don't need the cash and really want that specific $200k car, and even then - depending where they live it would probably be easier for them and Stake if they just take the cash and just buy the car themselves.