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Chevy's 6.6-liter Duramax is pretty much all new

To say there's a heated battle in heavy-duty pickups is an understatement, with Chevrolet, Ford, and Ram constantly trading blows of increased torque, horsepower, and towing capacity. The latest salvo is the revised, more powerful turbo diesel 6.6-liter Duramax V8 in the 2017 Chevy Silverado. It has 910 pound-feet of torque, an increase of 145, putting it nearly level with the Ford Super Duty. Here's a closer look at where those gains come from. How exactly did Chevrolet add all that torque plus 48 horsepower? The automaker essentially took a fine-tooth comb to the entire engine. Chevy says it changed 90 percent of the V8, and the cumulative effect of those small changes adds up to big increases. As you might guess, the turbocharger is updated. The larger unit features electric actuation of the variable nozzle turbine (VNT), and what Chevy calls a double axle cartridge mechanism that separates the VNT moving parts from the housing. That helps with heat performance as well, with a claim that the exhaust side of the turbo can run continuously up to 1,436 degrees Fahrenheit. Helping that cause are six exhaust gaskets made of Inconel - an nickel alloy that contains chromium and iron – and upgraded stainless steel for the exhaust manifold. Despite having the same cast iron cylinder block, albeit with some minor enhancements, the engine has new cylinder heads, pistons, piston pins, connecting rods, and crankshaft, which have all been upgraded to handle 20 percent higher cylinder pressures. Alongside the increase in pressure, Chevrolet also increased the cylinder head's structure with a honeycomb design. The pattern features high-strength aluminum with dual layer water jackets that not only improve strength, but also optimize water flow for better cooling. For 2017, the cylinder head also benefits from integrated plenum that aids the engine in getting more air under heavy loads. The cylinder head isn't the only component to get a minor update, as the pistons have a larger diameter pin for improved oil flow. The same detailed improvements has been bestowed to the humble connecting rods (second in our hearts only to the inanimate carbon rod). The new design has the bolts oriented roughly 45-degrees to the rod instead of parallel. The angle split design, as it's called allows for easier passage through the cylinder.

Opel Ampera-e brings a Bolt of EV driving to Europe

The Chevrolet Bolt will take a trip across the Atlantic in 2017 to become Europe's Opel Ampera-e. General Motors won't release any specs for the foreign version yet, but these photos suggest very minor styling tweaks to the upper level of the grille and to the hatchback to add the appropriate brand emblems. We would expect the same electric motor with 200 horsepower and 266 pound-feet of torque and 60-kWh battery as the US model, too. However, the 200-mile range number might change, but only because of the differences in European testing. GM CEO Mary Barra announced the Ampera-e at the CAR Symposium in Bochum, Germany. "GM and Opel have always been convinced that electric cars will play a defining role in future mobility. The game-changing technology of the Ampera-e is a significant step toward realizing that vision," she said. The Ampera-e is also proof that General Motors loves confusing naming for its green models. If the Volt and Bolt aren't perplexing enough, the Ampera-e is just one letter off from the Ampera – the previous-gen Volt in Europe. GM no longer sells the range-extended vehicle there, so at least both names can't be in showrooms simultaneously. However, the similar monikers still might confuse some customers who think the new EV hatchback is closely related to the old sedan. Related Video: OPEL GROUP ANNOUNCES GAME-CHANGING AMPERA-e BATTERY ELECTRIC CAR New battery electric vehicle will break down barriers to electric mobility Five-door, five-seat Ampera-e will have longer range than most electric cars Fun to drive, outstanding connectivity and affordably priced Russelsheim. Opel Group will launch a revolutionary new battery electric car next year, as the company continues the biggest, most far-reaching model offensive in its history with 29 new models between 2016 and 2020. The new five-door, five seat will be called "Ampera-e". It will not only have a longer range on a full charge than most electric cars, it will also be affordably priced. Building on the electrification expertise established with the original Ampera, which set the benchmark for modern electric cars in 2011, the new Ampera-e combines innovative electric-mobility with state-of-the-art connectivity and exciting driving dynamics. Announcing the Ampera-e today at the CAR Symposium in Bochum, Germany, GM Chairman & CEO Mary Barra said: "GM and Opel have always been convinced that electric cars will play a defining role in future mobility.

Weekly Recap: Autonomous driving goes commercial in Nevada

Nevada granted Daimler Trucks North America the first license to run an autonomous commercial vehicle on public roads in the United States Tuesday, marking another milestone in the technology's rapid advancement. Gov. Brian Sandoval and Daimler truck chief Wolfgang Bernhard promptly used the license to lap Highway 15 near Las Vegas in a newly revealed Freightliner Inspiration Truck. It was a clear signal that autonomous driving is big-rig reality, though it's still a long way from widespread use. Nevada certified two of Daimler's Freightliner Inspiration Trucks, which use the company's Highway Pilot system with a stereo camera, radar, and lane-keeping collision-prevention features to regulate the brakes and steering. The radar component has a long-range sensor that can cover 820 feet at an 18-degree angle and a shorter-range unit that stretches 230 feet at a 130-degree angle. The Inspiration trucks are based on the existing Freightliner Cascadia Evolution model used on US roads. In addition to the autonomous technologies, it also has futuristic design cues, including blue lighting in the front and a new hood and grille. While there are only two Freightliner Inspiration trucks in existence, Daimler expects to bring the Highway Pilot system into mass-produced big rigs by 2025, in time to capitalize on the market's predicted growth. The German truckmaker predicts the global hauling market will triple by 2050, and the United States will be a key part of that growth. Trucks carry 69.1 percent the nation's domestic freight tonnage and hauled 9.7 billion tons of freight in 2013, according to the American Trucking Association. Daimler expects autonomous driving to augment this growth, and perhaps evolve the role of the truck driver. Still, the company points out autonomous tech is not meant to replace drivers, but to assist them and relieve fatigue and monotony on long hauls. The driver has to stay in control for passing, in city traffic, and when hooking up the trailer. The company said autonomous driving also offers the potential for improved fuel economy – tests showed a five-percent gain – and lower maintenance costs. Daimler also said the technology could reduce congestion on the road. Much of this is attributable to the constant flow of traffic, which is aided by autonomous driving. While the benefits are becoming increasingly apparent, autonomous technology is still met with skepticism.