Jaguar development team once said that they will be working on Jaguar hybrids soon . And it seems they just started . Our friends from NextAutos.com spotted XK mule running laps round the Nürburgring ('Ring) . From the pictures , only some tiny bits have changed . Such as front and rear bumper and the exhaust . So a sliet facelift . No , what NextAutos noticed is the noise , or shall i say the lack of noise . The photographer noticed complete silence from the engine . This is why this Jag mule is expected to be a hybrid . A racing hybrid .