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40Porsche Macan teaser reveals unique quad-LEDs

In truth, all-but-undisguised prototypes for the upcoming Porsche Macan compact crossover have been spotted galavanting all around the globe for some time now, but even the least-camouflaged examples have been caught wearing eyepatches covering their headlights and taillights. A dark new teaser image from Porsche clues us in to why that is – the baby Cayenne is getting unique quad-LED peepers up front.

55Audi 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.

20Street Smarts, customizable puddle lamps project your class

Ah, SEMA. Always a bastion of terrific ideas and entirely tasteful modifications. The latest innovation to come from the show that brought you this, and that is a product called Street Stamps. Building off of the previous popularity of underglow lights, Street Stamps project a customizable image on the ground from your vehicle. The image can be rendered in white, blue, red, green, yellow or a custom color at the owner's request.

58Cadillac choreographs light show for approaching its 2013 XTS

Cadillac has already been releasing a steady drip of information about what's going into its 2013 XTS like its autonomous-vehicle tech, and now it's focusing on lighting choreography. Cadillac reminds us that its lighting signature is vertical bands of illumination, tying it back to 1948, when the tailfins for which the brand is still known were first used on cars like the Fleetwood Sixty Special and Series 61 Coupe.

49LG attempting to ban BMW and Audi sales in South Korea over patent dispute

LG Group has taken up legal arms against both BMW and Audi over a patent dispute. The technology company is reportedly aiming to have the sale of vehicles from both German automakers banned in South Korea over an LED patent dispute. According to Korea Times, LG Group is claiming that Osram, the manufacturer of LEDs favored by both automakers, is infringing on LG patents. Oddly enough, LG was once behind the patent game and had to pay Osram to use the company's LED technology in LG products. Now

34Lit Up: GM RenCen wants more LED signs

General Motors is looking to deck the Renaissance Center in more LED lighting, according to a report from The Detroit Free Press. The manufacturer has already installed one ring of the colored lights at the top of its tower and has petitioned the City of Detroit to allow the building to be fitted with vertical LED strips along the exterior elevator of the main tower. GM also wants the city to relax its signage regulations to allow it to scroll messages across the sign at the top of the center to

50Unintended Consequence of Technology: New LED traffic lights can't melt snow

Traffic lights using state-of-the-art LED illumination use 90 percent less electricity, offer a much longer service life and are more durable than their incandescent counterparts. Taking advantage of the countless benefits, cities around the country have been replacing traditional filament-based traffic signal bulbs with LEDs for years. Unfortunately, the low-watt LED units burn much cooler than its white-hot counterpart making it unable to melt snow off weather exposed traffic fixtures.

11Skoda reveals facelifted Octavia RS and Scout

2009 Skoda Octavia - Click above for our high-res image gallery

16New all-LED headlamps are standard on Audi R8 V10

Back last spring, Audi began offering an optional all-LED headlamp cluster on its R8 sports car as a $5,600 option. The new R8 V10 that was announced in early December will incorporate these LED lamp clusters as standard equipment. The R8 V10 is the first car in the world to get LEDs for both the high and low beams. The LEDs use only one quarter of the energy of conventional halogen lamps and Audi expects that energy consumption to drop by another half over the next decade. That amounts to signi

7Audi going to full LED lighting on the R8 for just $5,600

In the ongoing effort to improve fuel efficiency on vehicles, automakers are looking for ways to reduce parasitic losses that absorb power from the engine rather than sending it to the drive wheels. That means replacing constant drive hydraulic steering assist systems with on-demand electric equivalents and just generally trying to cut the power requirements for all accessory systems. One area that draws power is the lighting system. Cutting the power requirements for headlights is a tricky prob

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