Prop a car, rent one for a weekend getaway, or auction off at a charity event. Either way, it's win-win, because if you don't have the down payment for one of these ultra-luxury cars, you can just play for awhile, at a small fraction of the cost. Rates range from $995 a day to $2,250, and $4,950 to $9,950 for the week.
On my wishlist but not for rent, is Aptera's electric vehicle. Only available in California so far.