A Heart of Gold Achievement in Forza Horizon 5

You'll likely get this one naturally, because as soon as you find a Barn Find, you have the option of gifting a car to another player. Of course, be aware that doing this will remove the car from your garage, so only send a car that you don't use, and also, don't give away a rare one you can't buy either, because if you need it or want it later on you'll have to get it through a Wheelspin, and you don't want that!