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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.

Consumer Reports digs Mazda3, disses Jeep Cherokee

Consumer Reports has just rendered its verdict on two of the more important cars to launch this year - the Mazda3 and the Jeep Cherokee. Considering the value a "Recommended" rating carries with the public and the viciously competitive markets these two cars compete in, Consumer Reports' view could have some impact on their initial success.
For Mazda, that's a good thing. CR spoke quite highly of the Zoom-Zoom brand's compact sedan and hatch, testing both models, and citing the excellent fuel economy and snickety-snack manual shifter as high points. Downsides to the 3 included a ride that is agile but "nervous," a bit too much noise and a cramped back seat. Still, the 3 was good enough to earn its place in the ranks of the "Recommended."
The Jeep didn't fare quite so well, with CR calling the polarizing CUV "half-baked." Although both engines were tested, the magazine called the 2.4-liter four-pot underpowered and its nine-speed automatic unrefined and unresponsive. That's particularly damning, considering the 9AT's role in future Chrysler products, including the extremely important 200. Overall, the Cherokee missed out on the coveted "Recommended" rating.

2021 Mazda CX-3 gets a few more features, costs same as in 2020

The Mazda CX-3 is still down there at the foot of the Mazda lineup, chugging into 2021 and its seventh year on sale. The subcompact hatchback hasn't been overhauled since its debut and in 2020 had its three trims rationalized to one trim, so it gets denied the attentions paid to the Mazda3 and the CX-30. Those with an eye on the CX-3, however, will pay the same amount in 2021 as buyers did in 2020. Mazda announced a base price of $20,640 for the sole CX-3 Sport model, for a total of $21,740 after the $1,100 destination charge. Going from a Sport FWD to the Sport AWD adds $1,400, coming out to $23,140. Mazda's littlest crossover is powered by a Skyactiv-G 2.0-liter four-cylinder producing 148 horsepower and 146 pound-feet of torque, shifting through a six-speed automatic. The nicer, newer, larger CX-30 is powered by a Skyactiv-G 2.5-liter inline-four that it shares with the Mazda3, producing 186 horsepower and 186 pound-feet of torque and mated to a six-speed auto. The front-wheel drive CX-30 starts at $23,000 after destination, $1,260 above the CX-3, the AWD CX-30 maintaining the same price gap at $24,400.    Related: Least expensive vehicles to insure in America   New for the 2021 CX-3, the i-Activsense suite has been updated with night pedestrian detection for the low-speed forward collision alert and avoidance system, and the LED headlights are self-leveling with enhanced auto on/off activation. The standard driver safety systems also include adaptive cruise control, automatic emergency braking, blind spot warning with rear cross-traffic alert, and lane departure warning. There's a seven-inch touchscreen infotainment system with Mazda Connect, Android Auto, and Apple CarPlay, and remote keyless illuminated entry thrown in, too. The Sport trim goes with a louver-styled grille, roof spoiler, and 16-inch alloys. In fact, other than the cost-extra colors Machine Gray Metallic, Snowflake White Pearl Mica, and Soul Red Crystal Metallic on the eight-strong exterior palette, and some minor cosmetic options, the basic CX-3 is the only CX-3. It will reach dealer lots next month. Related Video: