In 1914, prior to the Communist revolution, several postcards were made depicting how Moscow would have looked like in the future, still under monarchial rule. The postcards depict daily life in different parts of the city, with the addition of everything from subways to airborne public transportation, things probably seen as standard methods of transport for the future.
Several years ago, these postcards were apparently discovered after Eyinem, a chocolate company, included reprints of these in their products. Since then, the postcards have been featured on several Russian blogs. The entire set (or at least the only ones available on the internet) are below, albeit in low quality as I was not able to find the originals in any larger size. Accompanying captions originally included on the back of these cards have also been included here.