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Mazda Kai concept hints at a more muscular, refined Mazda3

Mazda is packing some serious punch for the Tokyo Motor Show, unveiling a stylish hatchback it's calling the Kai Concept to go along with the earlier reveal of the show-stopping Vision Coupe. The compact five-door concept heralds a new generation of cars for the Japanese automaker, which is best known for making sporty, smallish and well-designed vehicles — such as the Mazda3, from which this concept derives its design direction. This version smooths over most of the Mazda3's sharp body creases in favor of smooth, undulating body panels that dramatically reflect light and reflect Mazda's KODO design language. It also gets more narrow, aggressive-looking headlights and a unique overhead profile, with two panes of glass that continue from the windshield and are intersected by a solid-color center, like a U-shaped moonroof. The Kai is powered by a next-generation Skyactiv-X combustion engine, which uses Mazda's proprietary compression ignition system to give the gas-powered engine the fuel efficiency, torque and initial acceleration response of a diesel powertrain. Which is encouraging, considering the Mazda3 already delivers impressive fuel economy. Inside, the concept hints at more refinement, with streamlined chrome accents popping from the black dash and interior panels. It all rests on Mazda's Skyactiv Vehicle Architecture that reflects human-centered design philosophy in everything from redesigned seats to maintain the spine's natural "S" curvature, to NVH tweaks to encourage a quieter, more comfortable ride. Mazda has said it plans to put this concept into production, but there's no word yet on when exactly that will be.Related Video:

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.

2020 Mazda CX-5 diesel is still, and perhaps forever, MIA

Halfway through 2020, the most recent Mazda CX-5 diesel you can find anywhere in the U.S. is a 2019 model year — the only one offered so far. With automaker factories beginning their model-year turnovers shortly, CarsDirect did some poking around as to the fate of an oil-burning 2020 CX-5. The outlet couldn't get definitive answers, but a host of secondary evidence suggests the diesel crossover will skip this year, naturally leading to the question of whether the model will skip this market from now on.  Asked in April about the crossover's fate or its arrival, Mazda would only say that "with the current state of the world, many things are tentative." The following month, the automaker's early fleet ordering guide pegged this month as marking the end of CX-5 production, 2021MY crossovers starting down lines in August. Mazda had nothing to say about that information, either. When CarsDirect got in touch again for this latest report, Mazda professed the delay has nothing to do with emissions certification. Then the wall went up again, the only other comment being, "We cannot confirm any details for the CX-5 Diesel at this time."    We're speculating, but at this point, even if Mazda could get 2020MY CX-5 diesels on the lot, why should the automaker bother? The challenges for diesel in general, and this expression of diesel particularly, are clear to everyone; our last post on the CUV, six months ago, was about the five-figure discounts dealers were offering. A quick check on Autotrader at the time of writing shows 45 examples of the 2019 CX-5 diesel available nationwide, plenty of them still priced in the low- to mid-thirties. On Autotrader Canada, which specifies vehicle availability beyond the "1,000+ Results" on the American site, there are 6,135 CX-5s listed nationwide, only 58 of them diesel. Canadian outlet Motor Illustrated wrote, "Mazda recently told us they had a lot of Mercedes-Benz GLE diesel owners and other diesel fans with upscale models trade for a CX-5 diesel." Apparently luxury diesel crossover conquest buyers aren't numerous enough to support a model line. The gasoline versions of the 2020 Mazda CX-5 launched in November last year. It shouldn't take that long for us to find out about the fate of the 2020 CX-5 diesel, or if there will be a 2021 model. Related Video: