Hydrogen cell powered cars will start to become mainstream, but petrol or diesel / electric hybrids will be the norm as they will have phenomenal power output from relatively small turbocharged engines.
Continued development in run flat technology will see the end of the pneumatic tyre.
Home networks will routinely include TV, Stereos, Fridges, Central Heating (or AC), lights, cars etc
Monday will become "Work From Home" day for office workers due to technology and savings on office running costs.
SKY TV will be Pay On Demand rather than subscription, so you pay 20p to watch Ross Kemp On Gangs for example but don't have a monthly fixed fee.
Computing power will increase via more cores - maybe 50 in ten years.
Graphics will be a diminishing return in games as they can't continue to improve at current rates. Other senses will be exploited - for example, consoles and PCs will have "smell cards" so you will smell the battlefield when playing Call Of Duty 12.
Bill Kenwrights "24/7" search for new investment will continue at Everton.
(In 20 years, stimulating the other 4-19 senses - depending on how you classify a sense - will be done via direct connection to your nervous system. The brain / tech interface will also allow input so when they make the game of the film "Firefox" you will have to learn to think in Russian to fire the weapons and G-Force will be simulated via electronic interface. You might even be able to get Vietnam flashbacks beamed into your head)