The air in Japan?

I was driving behind a Nissan Patrol the other day ( yeah, bad luck eh!) and noticed the sticker on the rear window "Genuine Nissan Air".....lovely thought...they must install a canister of air captured from some Japanese cherry orchard on a crisp spring morn and have a button somewhere so you can release it when the smog is just too much to bear.....
BUT
then i thought ...no it's probably a warning! those tyres have been filled with Japanese air at the factory in Japan so if you get a flat, you should probably call the EPA 'cause who knows what was in that air when it was pumped in! I mean we all know Horse Flu is rife over there, the wind could have been blowing from a racecourse over the Nissan factory that day and captured the Flu spores right into those tyres....
Thanks Nissan...how responsible of you!