We have not begun reducing greenhouse gas emissions by the most obvious means: teleportation.
Jet pants are not available for mass consumption in the American market.
Will Smith continues to work exclusively in fictional films.
The economy is down the tubes, probably due to lack of jet pants.
Elvis is still dead.
Robbie Williams' fervent belief in aliens is not exactly considered regular.
An iphone (while certainly more futuristic than many other gadgets) can not make a perfect ham sandwich ... yet.