Oprah's famous "You get a car! And you get a car! And everyone gets a car! " show landed each audience member who got a 'free' car with a $6000 tax bill.
https://www.history.com/this-day-in-history/oprah-gives-away...
https://www.history.com/this-day-in-history/oprah-gives-away...
With a 25% tax rate and car value of $28,500; to make it a tax-free gift Oprah should've paid an additional $9,500.
There’s a great YouTube view about exactly this by Stand Up Maths if you want to go down a rabbit hole.