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Tom Kristensen walks through a perfect lap of Le Mans in Forza 5

One of the best ways of learning a new track, aside from driving it, is to hear someone that's intimately familiar with it give you a good walkthrough. That's just what you'll get here, as the winningest driver in 24 Hours of Le Mans history, Tom Kristensen, walks you through the Circuit de la Sarthe's high-speed, 8.5-mile strip of pavement.
Kristensen is dubbed over scenes of drivers from a Forza Motorsport 5 contest lapping the track at the wheel of an Audi R18 E-Tron Quattro, adding a bit of visual sense to the Danish drivers description of the track.
With the 2014 24 Hours of Le Mans kicking off this weekend, this is just the sort of video you'll want to watch to get you in the mood. Take a look below, and then let us know what you think in Comments.

2014 Audi Q5 TDI

I've struggled with diesel technology. It's not that I have a problem with it or dislike it, but rather that I don't particularly understand what stops its wider-spread adoption. Sure, memories of rust-prone, smoky, sluggish and uneconomical Oldsmobile diesels aren't exactly easy to erase from the collective memory of the North American motoring public, but I'd think that a few years into the latest crop of clean diesels, there'd be wider adoption - or at least consumer consideration - by now.
Part of the issue is the still limited number of segments that diesels are available in. The Volkswagen Golf/Jetta TDI is finally getting a challenger in the form of the Chevrolet Cruze Diesel, and the BMW 328d is bringing something new to the entry-level sports sedan, but there are still a huge group of segments where diesel-power has no representation.
The small, luxury crossover realm is not one of those. It has the Mercedes-Benz GLK250 Bluetec, a stylish crossover with a silky-smooth 2.1-liter, turbodiesel four-cylinder that can return the kind of fuel economy that makes people take notice. And while the GLK250 is quite good, economy will only spread the diesel's appeal so far. People need to experience the seat-flattening torque that these mills can produce, and for that, we most humbly recommend the new 2014 Audi Q5 TDI.

Audi promises next A8 on sale by year's end, LED Matrix lamps to be available [w/video]

Audi has just released details about its new Matrix LED headlamps, but just as illuminating as the new lighting technology is confirmation that the next A8 will appear "on the market at the end of 2013." While Audi is calling the model new, expectations - and the spy shots above - suggest more of a traditional mid-cycle refresh.
Audi says that its new A8 Matrix lights are comprised of 25 high-beam LEDs, clustered in groups of five paired with reflectors. Unlike traditional automatic high-beam setups, the Matrix array is so precise that it "blanks out light that would shine directly onto oncoming and preceding vehicles" while continuing to use full high-beam power on other sections of the road and shoulder not occupied by other vehicles. Further, the camera- and electronic brain-governed system can dim or extinguish LEDs as necessary to deal with traffic. The active system also differs from today's adaptive headlamps by not requiring servo motors to direct light, yet they can still function as cornering headlamps - ones that can predict a road's trajectory because they are linked with the car's GPS system. Interestingly, the system also works with Audi's optional night vision system. When the latter detects a pedestrian in the dark, it automatically flashes a batch of LEDs to put both the driver and pedestrian on notice about each others' presence.
Only one problem in all of this trick lighting business: they aren't legal here in the US, at least not yet. Audi and other automakers are currently petitioning the National Highway Traffic Safety Administration, trying to sell the government agency on the technology's safety benefits. For the moment, Matrix headlamps are likely to remain forbidden fruit, but you can check them out and see what you might be missing in the video below. As for the 2015 A8, we're guessing it'll surface at the Frankfurt Motor Show in September.