1955 Kirk Douglas starred in a film called "The Racers" where he drove around in a real Maserati 250F Grand Prix car. The movie studio sold it for 200 dollars

https://www.facebook.com/sparksandbonney/posts/pfbid024YjxqppoGnEexNFGH1Hmvwh8LRWRJYUmXEE77DkjZceCEyXQ45g41JZRfBcrMsBDl

John Fitch drove the action sequences for Douglas, they filmed at Monaco.

https://primotipo.com/2015/11/02/the-racers/