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Mazda6 Skyactiv-D Racecar ready to bring diesel to Grand-Am

It may not be quite as radical as some of the company's past rotary racers, but the new Mazda6 Skyactiv-D racecar does have a notable powertrain underhood: the automaker's brand-new clean diesel four-cylinder engine.
Three of these new diesel-powered Mazda6 racers will take to the track in the Grand-Am GX class of the upcoming 2013 Rolex 24 at Daytona on January 26, with five drivers on each team. The car you see above, number 70, is sponsored by Mazda's longtime motorsports partner, SpeedSource.
Check out our full gallery of high-res images live from the 2013 Detroit Auto Show above and feel free to read through the related press release from Mazda below.

25th Anniversary Edition Mazda MX-5 Miata sells out in 10 minutes

Looking to buy one of the limited-edition 25th Anniversary Mazda MX-5 Miata roadsters? Well, you're too late. According to Mazda, all 100 examples of the darling two-seater have sold out - and it only took 10 minutes.
On Tuesday, Mazda opened its pre-order site for the limited-run Miata, and had intended to keep the site running until May 31, or until 250 customers were registered, whichever came first. Just 10 minutes later, 250 people had signed up. Now, Mazda will contact those folks, and the first 100 that are verified will be given the opportunity to pre-order the unique MX-5. "Upon verification of purchase intent and transmission selection, the customer's information will then be forwarded to the dealership of their choosing to finalize the transaction," Mazda said in a press release.
The 2015 MX-5 Miata 25th Anniversary Edition models will arrive at dealers this summer, retailing for $32,205 with the six-speed manual, or $32,655 for those desiring the automatic transmission. Based on the PRHT (Power Retractable Hard Top) model, the limited-edition Miata adds Bilstein shocks, a Soul Red metallic paint job (the same found on the gorgeous Mazda6) with a contrasting black roof, gunmetal wheels and an off-white leather interior. Special badging will be found inside the car, and buyers will also be treated to a custom-crafted Tourneau watch and a display winder box.

Next-gen Mazda MX-5 could use carbon fiber to cut weight

The current Mazda MX-5 Miata has only been out for a few years, but the automaker is allegedly looking for ways to lighten the next one. According to a report from Autocar, Mazda is looking to carbon fiber to help the next-generation MX-5 cut weight and use a smaller engine. Despite having more safety features, modern amenities, and a stiffer body, the current MX-5 is the same size as the original sports car from 1990 and weighs less than its immediate predecessor. In a recent interview with Autocar, Nobuhiro Yamamoto, head of the Miata program, revealed that the next generation of the Miata will probably stay the same size, but could be even lighter thanks to the utilization of carbon fiber. The current MX-5 uses high-strength steel and aluminum, and Mazda doesn't use carbon fiber in any of its cars. Carbon fiber is expensive to incorporate into road-going vehicles, and so Yamamoto notes that Mazda has been hard at work making it more affordable. A lighter car could result in a smaller engine, Yamamoto said. In the US, the MX-5 comes with a 2.0-liter four-cylinder engine that makes 155 horsepower, while the Japanese and European version comes with a 1.5-liter, 130-hp engine. A smaller engine would make the sports car even lighter. It's unknown at this time if the automaker is collaborating with another automaker or a supplier to make produce carbon fiber, or if it'll make it in-house. There's no word on how much carbon fiber the next MX-5 will wear or how it will affect the sports car's price. Autocar reports that the next MX-5 won't arrive anytime before 2021, which could make the ND MX-5's lifespan an unusually short five years long. With cars getting heavier, it's nice to hear that Mazda is working on finding a way to make its lightweight sports car even lighter. Related Video: News Source: AutocarImage Credit: Mazda Mazda Convertible Coupe Lightweight Vehicles