Though there is no racing in Paris, Mater visits the iconic city as part of his role in the elaborate international espionage storyline. The Pont des Arts seen in Paris in “Cars 2” is constructed with automobile leaf springs – a type of spring used in car suspensions. There is a longstanding Pont des Arts custom wherein couples attach a padlock to the railing and throw the key in the river, sealing their love forever. If you look closely at the Pont des Arts in “Cars 2,” you can indeed see padlocks on the railing. John Lasseter and his wife, Nancy, were once told during a visit to Paris that couples are supposed to kiss when they cross the Pont Des Arts. This tip made it into “Cars 2,” where you can spot two kissing characters on that bridge.