An interesting thought occurred to me the other day after reading a bit of news on the Teletext...
It said that Firemen had to be called out one day to an office block where a man was giving off charges of static so high that he was scorching the carpet around him. Don't ask what the firemen did but it was discovered that his nylon/polyester jacket was holding a charge of 20,000 volts.
How that occurred I do not know, I've tumbled dried synthetics before and they've given me shocks but that is crazy.
Now, is it not possible that batteries could in future be wearable? Could wearable computers source their energy from the very fabric they are attached to/woven inside?
Also, according to some website (might have been Project X) experiments have been done with flywheels and anti-gravity, the flywheel has broken from it's spindle - destroying a room and failing to stop under friction for several days.
The disadvantage to flywheels to power cars/planes would be their weight I suppose. And unless the car was nailed to the floor there'd have to be counter-rotation taking place (if a helicopter didn't have a tail rotor it would spin with it's rotor).