Japanese Lunar Base
Superfast rail Trein between London and Beijing
Cars with autopilot
But what are the critical points? You should develop a network of communication between cars in order they do not interfere in different ways and maintain satisfactory security standard. As travelers know well the wireless infrastructure is currently unsatisfactory even for our computer!
2020, I think it is a date too much optimistic for this Technological to became real!
Biofuels at costs competitive with fossil fuels
Control of tools by Brainwaves
Screens with OLED technology
Other Technological Innovations
Other revolutionary ideas that can improve the quality of life or provide opportunity to benefit from opportunities unknown to those people who have lived before may be: able to travel through space by means of private companies, low cost computer with capacity to operate similar to our brain, capacity of simultaneous translation from any language, glasses with enlarged reality and possibility to give information on objects you are viewing, the membranes can play typical behavior of the brain, thoughts, etc.....
The future is upon us. We'll see which of these technological innovations above descripted will be realized by 2020, or sooner or later. Certainly the future often exceeds all our expectations.
Innovation technology, you know, is often generated by random discoveries.