Valentino Rossi and Lewis Hamilton completed their dream ride swap last week, with the MotoGP and Formula 1 legends sampling each other's machinery.
Hamilton lapped in Valencia on Rossi's Yamaha, while 'The Doctor' was given a go in the Mercedes star's title-winning W08.
The six-time F1 world champion has previous experience on competition motorcycles, having tested World Superbike machinery last year, but this was his first time on a MotoGP bike.
Fresh from his latest championship triumph, there was certainly no slacking from Hamilton as he got to grips with the Yamaha!