The EV1 is a full scale, 100% electric-powered race car built to resemble a modern Class 1 unlimited open-wheel machine.

ENGADGET: SRI EV1 brings all-electric racing to the Mexican 1000 rally (video)

Patients on the CardioWest heart, the successor to the Jarvik-7, have to wheel around a machine the size of a small refrigerator and are confined to a hospital.

FORBES: Lonely Heart

Most of the earth being moved to make way for China's highways, factories and skyscrapers is handled by a fairly simple machine called a wheel loader.

FORBES: Digging In

The last thing I want is for a machine to take the steering wheel out of my hands.

ENGADGET: Editorial: Self-driving cars FTW, but not for everybody

We decided to exclude the traditional list of "simple machines, " which includes the lever, pulley, wheel and wedge, since most other tools employ some form of simple machine--a hammer is basically a lever, and an axe is essentially a wedge.

FORBES: Methodology

Enlisting the help of an engineer, Whelan has spent the past 18 months perfecting the machine and has created a highly adaptable device which snaps on around the wheel of the bicycle.

CNN: Virtuous cycles