Gyro-X looks like an interesting technology from 1967. It was a car with two wheels and was balanced by a gyroscope. This allowed the car to be narrow so less drag. I remember reading about it years ago and how there was a government conspiracy to kill it off (the owner of the business disappeared). Something about it was similar in design to UFOs.

It wasn't the only gyrocar. There were a few from the early 20th century.

http://cobbsblog.com/gyro/gyro-x-menu.html

Gyrocars are far more efficient than four wheeled cars.

Assed if you were going 100mph on a motorway and the gyroscope failed...

Then it would be like a motorcycle. If the motor in the gyro stopped the gyro would still keep on spinning for a couple of minutes.

http://glark.org/media/story-entity.jpg

you knew it was coming.

I see the potential for a penis-shaped vehicle with this technology.

How awesome would that be?

EDIT:

http://farm3.static.flickr.com/2387/2473882662_29144f666a.jpg?v=0