WATCH: The ultimate ride swap - Valentino Rossi and Lewis Hamilton trade machinery

In what can only be described as the ultimate ride swap, 9-time MotoGP World Champion Valentino Rossi steps into Lewis Hamilton's 2017 title-winning Mercedes-AMG W08, and hands his 2019 Yamaha MotoGP YZR-M1 bike over to the six-time F1 world champ as they hit the track at the Circuit Ricardo Tormo in Spain.