Whilst still a little way off, these technologies are already becoming a reality: challenging the prevailing perception that an environmentally friendly lifestyle can't go hand in hand with comfort and convenience.
Making predictions is never wise especially if you live to see your predictions failing (remember Y2K?) , but looking at numbers there are evidences that some of these predictions will definitely come true. For example, demographic changes across the world are a certainty.
"Never prophesy, especially about the future." That nicely captures the perils of predictions - so nicely, indeed, that the saying or a version of it has been credited to numerous people, from the movie mogul Sam Goldwyn to baseball's Yogi Berra.