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Tougher than steel: Wood pulp could make lighter auto parts

KYOTO, Japan — The global push among carmakers to make ever lighter vehicles is leading some auto suppliers in Japan to turn to what seems like an unlikely steel substitute — wood pulp. Japanese researchers and auto component makers say a material made from wood pulp weighs just one-fifth of steel and can be five times stronger. The material - cellulose nanofibers — could become a viable alternative to steel in the decades ahead, they say, although it faces competition from carbon-based materials, and remains a long way from being commercially viable.> Related: Jay Leno drives the Renew cannabis car — hemp you can't dent Reducing the weight of a vehicle will be critical as manufacturers move to bring electric cars into the mainstream. Batteries are an expensive but vital component, so a reduction in car weight will mean fewer batteries will be needed to power the vehicle, saving on costs. "Lightweighting is a constant issue for us," said Masanori Matsushiro, a project manager overseeing body design at Toyota. "But we also have to resolve the issue of high manufacturing costs before we see an increased use of new, lighter-weight materials in mass-volume cars."A NEW PROCESS Researchers at Kyoto University and major parts suppliers such as Denso Corp, Toyota's biggest supplier, and DaikyoNishikawa Corp, are working with plastics incorporated with cellulose nanofibers — made by breaking down wood pulp fibers into several hundredths of a micron (one thousandth of a millimeter). Cellulose nanofibers have been used in a variety of products ranging from ink to transparent displays, but their potential use in cars has been enabled by the "Kyoto Process," under which chemically treated wood fibers are kneaded into plastics while simultaneously being broken down into nanofibers, slashing the cost of production to roughly one-fifth that of other processes. "This is the lowest-cost, highest-performance application for cellulose nanofibers, and that's why we're focusing on its use in auto and aircraft parts," Kyoto University Professor Hiroaki Yano, who is leading the research, told Reuters in an interview. The university, along with auto parts suppliers, are currently developing a prototype car using cellulose nanofiber-based parts to be completed in 2020.

Mazda specs new MX-5 Miata with accessories

It's been 26 years since Mazda showcased the original Miata at the Chicago Auto Show, and now it's returned with a conceptual take on the new model, decked out with all the accessories and optional equipment your roadster-loving heart could desire. Or at least some of 'em, anyway. This show car is painted Ceramic Metallic (Zoom Zoom-speak for "white") and spec'd out with a full aero kit (including front air dam, side sills, rear skirt and lip spoiler) all done up in gloss black, 17-inch BBS wheels and Brembo brakes with red calipers. Mazda is also showcasing a carbon-fiber luggage rack for the new MX-5 that weighs less than two pounds and includes and integrated brake light. "The concept parts and accessories we have showcased at the Chicago Auto Show," said Mazda's North American chief Jim O'Sullivan, "were developed to give customers a look at what is possible for the new cars to make them truly one-of-a-kind, adding to that excitement." See them shown off in our high-res gallery of live photos, above. MAZDA UNVEILS 2016 MX-5 MIATA ACCESSORIES CONCEPT DESIGN AT CHICAGO AUTO SHOW CHICAGO, Feb. 12, 2015 -- The only thing better than the all-new 2016 Mazda MX-5 Miata is a personalized 2016 Mazda MX-5 Miata. Today at the Chicago Auto Show, where the first-generation MX-5 Miata was introduced to the world in 1989, Mazda revealed an MX-5 accessories design concept of the next-generation roadster that will hit showrooms this summer. At the Chicago Auto Show, Mazda revealed a 2016 Mazda MX-5 Miata accessories design concept for the next-generation roadster that will hit showrooms this summer. "There is so much MX-5 history at the Chicago Auto Show, and we wanted to continue building on that," said Jim O'Sullivan, president and CEO, Mazda North American Operations. "The MX-5 is the soul of our company, and its enthusiast following both inside and outside of Mazda drives us to keep innovating new ideas for it and the rest of our lineup." Painted Ceramic Metallic, the 2016 MX-5 accessories concept will be on display from Thursday, February 12 through Sunday, February 22 and includes an Aero Kit, BBS Wheels and Brembo Brakes as well as a Luggage Rack shown separately in Mazda's display. MX-5 concept accessories include: - Aero Kit (Front Air Dam, Side Sill Extensions, Rear Bumper Skirt and Rear Lip Spoiler): The gloss-black Aero Kit is the same package found on the 2016 MX-5 Global Cup Car that debuted at SEMA in November.

Miata buyers prefer a manual gearbox, says Mazda

Earlier, we wrote about Toyota's underwhelming 2018 manual transmission sales figures. To recap – as Toyota's representatives told CarBuzz – the automatic Corolla outsold its manual equivalent to a ratio of 100 to 1, and just one in three Toyota 86 buyers picked a manual version of the rear-drive coupe. What about the other famous rear-wheel-drive offering from Japan, Mazda's MX-5 Miata? A case can be made that an 86 buyer cross-shops the Miata, and vice-versa, but what kind of split do Mazda's sales figures reflect in comparison? We reached out to Mazda for some sales data, and PR program manager Tim Olson told us 76 percent of Miata soft-top buyers go for the classic stick-shift option, leaving just 24 percent of buyers preferring the automatic. Both transmission options for the Miata are six-speed. The figures are based on year-to-date sales data for the 181-hp 2019 Miata, from July 2018 through April 2019. Interestingly, the more coupe or targa-like, retractable hardtop RF variant takes a step towards the 86 when it comes to transmission choices. While RF buyers still preferred the manual, the split was far closer to half and half: 52% went for the manual, and 48% chose the automatic. Perhaps this reflects the RF's more grand tourer-like image, and it might also be indicative of the RF's higher pricing. If you're going to spend nearly $34,000 for a Miata, another $600 for an autobox doesn't necessarily mean that much – choosing the auto on the base, Sport trim level soft top roadster is a $1,350 bump instead. While the $26,650 base Sport isn't exactly spartan, on a roadster it's fine to have less cushiness. With the higher-specced Club trim level, the auto's price tag shrinks to the aforementioned $600, as it is on the RF Club. There's no base Sport for the RF, as the cheapest RF is the $33,865 Club. But still, the manual shifter's snick-snack feel is one of the Miata's classic traits that has been with it since its inception 30 years ago. Sources say fewer than 5% of the original first generation Miatas were made with an automatic gearbox, but it's obvious trends and tastes are changing – although to be fair, automatics are getting much better as well.