You can look to some of the emerging technologies being explored by companies now to get some ideas into the future. The shame is that World's Fairs used to surprise and delight attendees who were positive about technology and the future, while now everyone seems to take a more distopian view.
For my two cents, I would expect to see:
Electric cars with standard chassis that you can change from van top for transporting the kids to convertable top (see GM Autonomy concept car)
Perfecting cleaning robotics so everyone has robot vacuums and mops (see Roomba)
Super highspeed public transport to get workers into the city faster from further away (see BART system, subways, etc)
More efficient technologies to grow healthy food in smaller spaces (a company in southeast Asia has a hydroponic farm in a rotating vertical elevator that grows upwards so uses less land)
All of these things are in development but are contained by profit making and the almighty dollar. I'd also like to see more done with our oceans, and in general technologies addressing the problems we face today - food production, disease prevention, transportation.
I work in the tech field, and find that the senior management is focused on immediate return on investment rather than looking to the future and long term thinking. I think this shortsightedness is what slows down the technology development machine.