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Nissan Juke Nismo RSnow is just the ticket for the next Snowpocalypse

With large swathes of the US either still getting now or digging out of the stuff, Nissan is teasing us all again with its Juke Nismo RSnow that has absolutely no fear of getting stuck in the inclement weather. The company first teased this custom's abilities on Twitter last week, and now it has released even more images and video of the RSnow powering through the powder. Beyond the obvious tracks, the Juke Nismo RS has remained mostly stock, though. Nissan had to trim the fascias for extra clearance, and the torque-vectoring all-wheel drive system was also reprogrammed. Otherwise, things are just like the regular version of the high-performance compact crossover, and even the CVT remains in place. The RSnow is made to support an ice-driving event in Lapland, Finland, and according to Nissan, this clip shows it at work on the Uddjaur Lake there. Traction is clearly not a concern on the ice. This is likely just the CUV many people around the Great Lakes and in the Northeast wish they could be driving right now.

Nissan Leaf Aero Style wears new body kit in Japan

Here we have the Nissan Leaf Aero Style, which the automaker says "offers 100% electric vehicle performance in a new stylish and sporty shape." We call it a Nissan Leaf with a not-terribly-attractive body kit and two-tone wheels. Suffice it to say, it's not much like the conceptual version Nissan showed off at the Tokyo Motor Show back in 2011...
Our blunt assessment of the Leaf Aero Style doesn't necessarily mean it's bad, of course. It's still, best we can tell, a Nissan Leaf through and through, which means it has the same 107 horsepower, 187 pound-feet of torque and 24-kWh battery pack as every other new Leaf. That, in turn, means it has an official range of 75 miles (though you're probably better off assuming you can get 50 or so miles per charge in the real world) and a top speed of 90 miles per hour.
The Nissan Leaf Aero Style will go on sale in Japan in December of 2013, and there's no word on whether or not it will make its way to the States. There's also no official word on whether the Aero Style is actually any more aerodynamic than the standard Leaf, one of the slipperier cars on the market. If you want to read all about Nissan's presence in Tokyo, scroll down below. If you just want to see the new body kit and wheels, check out our high-res image gallery above.

Infiniti's new VC-T changes the rules of small turbocharged engines

The upcoming Infiniti QX50 crossover does not get our pulse racing, no matter how shapely the QX Sport Inspiration concept that previews it may be. No midsize SUV does, to be fair. But it has something special under the hood – the world's first production variable-compression-ratio engine. That means the QX50's 2.0-liter turbo four, which makes 268 horsepower and 288 pound-feet of torque, will have up to 27 percent better fuel economy. Here's how it works. The trend of moving to smaller, turbocharged engines carries with it one big falsehood. Under low load when the turbo isn't needed, these engines are less efficient than an equivalent engine without a turbo because of the low compression ratio the turbo requires. That is, if you never need the extra power, you're wasting fuel. Turbocharged (and supercharged) engines use a lower compression ratio to prevent detonation. When you force extra air in a cylinder and mix it with fuel, it's more likely to prematurely go boom. Lowering the compression ratio prevents this problem, but it's less efficient. Infiniti's VC-T promises the best of both worlds, with a compression ratio that ranges from 8.0:1 for high-power turbo needs to a 14.0:1 ratio for fuel-sipping efficiency. At its heart the VC-T engine is a simple idea, but it's complicated to explain. Consider yourself warned. The photo below from Infiniti serves as a good visual overview. For the truly nerdy, this patent application covers the mechanical concept. Instead of having the pistons connected to the crankshaft, Infiniti's engine has a pivot arm with a connection on each end. One end connects to the piston, the other connects to a second lower shaft, which is controlled by an actuator arm. At any given time the engine's pistons move up and down according to the lobes on the crankshaft. But the actuator arm can change the angle of the pivot arm up and down. That is, the pistons still move in the same motion with the same stroke, but phase the entire stroke up or down. Move the pivot up and there's less room at the top, which means a higher compression ratio. Move the pivot down and the compression ratio goes down, too. As an added bonus, the lower shaft eliminates the need for counter-rotating balance shafts. Infiniti says this system works constantly and can vary the compression ratio to any number between 8:1 and 14:1. It also uses electronic variable valve timing on the intake valves to switch into Atkinson-cycle combustion for greater efficiency.