90507a12 Power Steering Pump Assembly 2.5 3.0l Mercury Mercruiser 73873 on 2040-parts.com

Watch the Porsche 911 GT3 rear-steering system work

A handful of manufacturers have offered four-wheel steering in the past including Honda, Nissan, BMW, Mitsubishi, Mazda and, most recently, Acura and Porsche. On Monday, suspension expert Elephant Racing uploaded a video to its YouTube channel demonstrating the feature on the 2014 Porsche 911 GT3. In most four-wheel steering cars--Acura and Porsche included—a computer controls the movable rear wheels.

Tesla: Model S sales to begin in second quarter of 2012

Tesla Motors plans to begin delivering the Model S electric sedan in the second quarter of 2012 and expects to produce about 20,000 units annually, the company said at the Detroit auto show on Monday. Tesla has booked more than 3,000 reservations for the Model S in North America and Europe. The car's expected base price is $49,000.

Audi outlines seven tech innovations

Audi has revealed details of seven new innovations being explored by its designers and engineers including electromobility, ultra-lightweight construction, networked mobility and lighting technology. Lighting design The team in charge of lighting design – an area in which the company is the current leader in terms of LED daytime running lights and headlights – and next up they plan on introducing OLED technology (Organic Light Emitting Diode) to its vehicle range. Only a few nanometers thick, this paste-like material spans the space between the anode and cathode, both of which are enveloped in an electrically conductive coating.