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Chris Harris brings together the 918 Spyder, LaFerrari, and P1

The Porsche 918 Spyder, Ferrari LaFerrari, and McLaren P1 show that a hybrid powertrain can make for blistering performance despite its electric assist. This trio doesn't arrive on track together very often, but Chris Harris assembled these three stars at the Portimao circuit for a nearly hour-long demonstration of their amazing capabilities. So, which one is quickest around the track? Harris provides an answer with in-car video of all three contenders. His team also goes out of its way to even the playing field by sourcing tires independently from Pirelli for the P1 and LaFerrari. With the technical part out of the way, Harris can start having fun by doing his usual slides during the driving comparison. Tiff Needell and Marino Franchitti also eventually show up to provide the perfect recipe for a track battle in these hypercars. If you don't have the time, skip about 14:25 into the clip just to see the lap times. However, those numbers only tell a tiny part of the story. The whole video is definitely worth a watch.

McLaren 650S will hit 124 mph in 8.4 seconds

Sometimes an automaker reveals a car, in full, and that's the whole story. But sometimes things get dragged out a bit. The McLaren 650S falls in the latter category, which strikes us as a bit odd considering that it's essentially a massaged version of the existing MP4-12C. No matter, the news here remains impressive all the same. The British racing team turned supercar constructor first announced the arrival of the 650S two weeks ago. A few days later, the first images and video footage leaked out. McLaren quickly released initial details and official photos the next day, but withheld certain information – key details like pricing, and, you know... how fast it can actually go. We still haven't seen the thing in person – that will come next week when the car is unveiled at the Geneva Motor Show – but now McLaren has released official performance stats for its new supercar (along with a trio of new snapshots). So just how quick is it? Well, for starters, it'll run the 0-62 mph sprint in three seconds flat and trip the quarter-mile lights in 10.5 seconds before topping out at 207 miles per hour. That's rather quick no matter how you slice it, but for context, McLaren points us to the car's 0-124 mph time, and how that compares to other cars it's made. At 8.4 seconds, it takes the 650S half a second less to reach that speed than the 12C upon which it's based – that means it's a full second quicker than the legendary McLaren F1. And that's no mean feat considering that, even twenty years later, McLaren's first road car is still the yardstick against which all other supercars are measured. Scope out the rest of the impressive stats in the press release below. PERFORMANCE FIGURES ANNOUNCED FOR THE McLAREN 650S AHEAD OF GENEVA DEBUT Feb 27, 2014 - New McLaren 650S Coupe can accelerate 0-200km/h (0-124mph) in just 8.4 seconds - Faster than rival 'stripped out' road racers, yet offers far superior comfort, refinement and equipment - Available in Coupe and Spider variants from launch As the first example of the McLaren 650S rolled off the line at the state-of-the-art McLaren Production Centre in Woking, McLaren Automotive has released performance numbers and confirmed pricing ahead of the global debut at the 84th International Geneva Motor Show. The latest addition to the McLaren range accelerates to 100km/h (62mph) from rest in just 3.0 seconds, and can reach 200km/h (124mph) in just 8.4 seconds.

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.