We got an Echo over the holidays, and watching my 7, 5 and 3 year old daughters interact with it has given me a glimpse of what bringing home a black-and-white TV in the 50s must have been like: Objectively it's pretty limited, but it (voice-driven interaction, rather than the Echo specifically) is so obviously the future it's striking.
Separately, I've told my daughters that they probably won't ever need to learn to drive--cars will probably do it for them by the time they are driving age.
They've put two and two together, and the other day I overheard them saying "Someday we'll be able to call an Alexa car and have it take us where ever we want."