DRIVE BY WIRE TECHNOLOGY

Sure. Mrs. Google can:

http://www.google.co.uk/search?sourceid=navclient-menuext&ie=UTF-8&q=drive+by+wire

Ah, those must be the types preferred by young people. You pull on the left wire to got to the left and pull on the right wire to go to the right .

Seriously...

Drive-by-wire is a technology where the steering wheel does not directly control the front tires of the car. The wheel's orientation is sensed and the proper tire direction is set by a positioning motor or cyliner (not so sure about that part).

I guess the main difference of this technology versus power steering or "power-arm" steering is the lack of feedback from the steering wheel. You don't get that kick from the wheel when you pass over rough roads.