Toto Wolff has put a rare Ferrari F40 up for sale, as the Mercedes boss continues his mission of selling a collection of rare cars. The Mercedes Team Principal began his car selling ambitions over a year ago, and has previously parted company with a 2003 Ferrari Enzo, and a LaFerrari Aperta, the convertible version of LaFerrari . Now it's the turn of his Ferrari F40, which has been put up for sale through high-end car sales expert Tom Hartley Jr. According to the article, it is 'Ferrari Red Book Classiche certified' which means the car still has its original…