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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.

The AW list: 10 best cars to modify

For many, a car right off the showroom floor just isn’t good enough. Luckily, there’s the aftermarket to help cars make more power, handle better and (sometimes) look better. Below are AW’s picks for the 10 best new cars to modify.

Toyota Hydrogen Fuel Cell breakthrough to be announced at Frankfurt Motor Show

Toyota Hydrogen Fuel Cell breakthrough to be announced at Frankfurt Motor Show Regardless of whether you think the electric car is potentially a planet saviour or not, the idea of powering cars with hydrogen is a powerful one; the holy grail of automotive powertrains. Technically, ICE cars can be built to run using hydrogen (and a retro-fit allowing that to be achieved economically would be a huge breakthrough) but car makers are heading down the road of electric cars being powered by a hydrogen fuel cell at the moment. In Toyota’s case, that means a setup similar to their hybrid cars, with a hydrogen fuel cell replacing the petrol engine.