Bentley Mark II Continental - This Bentley was featured in the novel Thunderball and is Bond's final Bentley. Bond upgrades the engine from a 4.5 liter engine to a 4.9 liter. The Mark II was also grey, however, the interior was black leather. The Mark II Continental is last seen in the novel On Her Majesty's Secret Service where Bond upgrades the vehicles once again with an Arnott supercharger controlled by a magnetic clutch. Bond dubs the car "the locomotive".