Rossi & Hamilton - Behind the scenes
When Valentino met Lewis
Last year, in simpler times, Monster Energy put their two superstars from two and four wheels together for a bit of a ride swap.
Hamilton is a self-confessed bike nut and has done lots of work with MV Agusta. Rossi has also been teasing F1 with his presence after a successful Ferrari F1 test over a decade ago.
Here's a longer video showing some more behind-the-scenes action