In Cars 2, Siddeley is first seen at the Haneda Airport on his way to pick up Finn McMissile and Tow Mater. During Finn and Mater's chase Acer manages to shoot at one of Siddeley's tires which causes him to pressure Finn to hurry up and get on board of him, which causes Finn to take lead and barely manage to get himself and Mater on Siddeley. While in the air Finn asks Siddeley to take him, Mater and Holley to Paris with Siddeley asking if he sure use his afterburners with Finn confirms him to. After that Siddeley does not make an appearance until the end of the film during the Radiator Springs Grand Prix with Holley stating that he's "gassed, geared, and ready to fly." Siddeley is last seen hovering in the air briefly giving a wink to the viewers and blasts off as the screen fades to black.
Cars 2: The Video Game
In Cars 2: The Video Game, Siddeley doesn't make a major appearance, however, he does appear in the game in one of the buildings in the Airport Arena.
In Planes, Siddeley can be seen at the Mexico City airport during the final stretch from Mexico back to New York City.
Planes: Fire & Rescue
In Planes: Fire & Rescue, Siddeley can be seen delivering celebrities to Fusel Lodge at Piston Peak National Park.
Siddeley is a state-of-the-art British twin-engine spy jet. At 176 feet from nose to tail and an impressive 157-foot wingspan, the super sleek silver-bodied Siddeley streaks through international skies at record-breaking mach 1 speeds. Outfitted with all the latest in high-tech spy equipment, including cloaking technology, defensive weaponry and afterburners, Siddeley is Finn’s steadfast partner-in-fighting-crime around the globe.
Unwelcome Aboard • In Plane Sight • Fast Friends • Airport Invasion • There's No Place Like Chrome • Oil Rig Showdown • Hit the Road • World Grand Prix • Runway Invasion • Porto Corsa Invasion • Objects in Mirror • Airport Showdown • Burning the Midnight Oil • Coastal Invasion • Runway Runaway • Harbor Hassle • Power Surge • London Showdown • Foe Interior • Hit or McMissile • Unfriendly Competition • Air Power • Rush Delivery • Italy Showdown • Tokyo Invasion • Save the Queen • Sour Lemons • Lightning the Mood • Home Security • Tokyo Showdown