Arias Pistons 12.5:1 Compression 82mm Bore Honda B-series on 2040-parts.com

Video shows Audi R18 'long tail' e-tron quattro's blistering Monza run

Audi has had a pretty solid run at the 24 Hours of Le Mans over the past decade, but we're glad they keep pushing the envelope. That's how they keep devising road-going spaceships like the staggeringly fast R18 e-tron quatto equipped with a “long tail” aerodynamic package. This quick video of the “long tail” hybrid testing at Monza gives us a preview of what we can expect at Spa next month -- and hints at what we'll see at Le Mans in June.

Vauxhall Insignia Country Tourer (2013) at Frankfurt motor show

The Vauxhall Insignia Country Tourer is a more rugged crossover version of the regular Insignia Tourer estate that we saw in facelift form last month. We’ll find out how much extra you’ll pay for the Country Tourer when it’s shown off at the Frankfurt motor show in September 2013. We're expected a price tag of £31-32k, compared to £28.5k for a standard Tourer with the same engine.

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.