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Mazda zooms into SEMA 2016 with lighter MX-5 Speedster and RF Kuro concepts

It's almost time for the 2016 SEMA aftermarket show again, if you haven't guessed already by the steady parade of early looks at various show cars. Mazda's MX-5 creations are generally a highlight for us, unapologetic Miata junkies that we are. This year's cars should be just as exciting as last year's, one being a revision of last year's Speedster concept and the other based on the brand new, sexy RF retractable targa top model. Both SEMA MX-5s were designed and built in-house at Mazda's Irvine design studio. This year's Speedster is somehow even lighter than before. Mazda carved 100 pounds out of it, making it a staggering 350 pounds less than a production soft top model. It's also been repainted in a color called "White Ether", which we're imagining looks something like the "Blue Ether" paintjob on last year's highly reflective Speedster minus the blue tint. Mazda will probably never sell a roofless Miata or anything this lightweight, but maybe it should. It looks like it'd be a blast to drive at a road course. And then there's the RF Kuro concept, the first RF-based SEMA show car, which is shown in the teaser above. It doesn't seem terribly extreme, to be honest. It's wearing a matte charcoal paint, which explains the "Kuro" moniker – kuro means "charcoal" in Japanese. A set of 17-inch RAYS forged wheels and MX-5 Cup suspension, and that's about it. Not to knock it; the RF is a sexy looking thing as it sits, and Cup suspension should make it handle even more like a go-kart. Of course, both concepts will be fully revealed at the show next month in Las Vegas. Stay tuned for a dose of concept Miata hotness.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.

Recharge Wrap-up: First EV to attempt Dakar Rally, Mazda makes bioplastic parts

Zap and Jonway Auto brought their Urbee EV and their new Falcon A-380 SUV to the Peru Motor Show in Lima. Jonway sells its SUV and minivan in Lima through Dai-Ichi Motors, which displayed the cars at the show. According to the companies, their cars "received tremendous interest from the public," including private citizens as well as groups who would use the EVs for security guard service or campus use. Read more in the press release below. California is the US leader when it comes to EVs. In 2013, California had 70,000 battery electric and 104,000 plug-in hybrids. The state boasts almost half of the country's electric vehicles, thanks largely to state and local EV incentives that go beyond the federal tax rebate. California also leads the way in legislation, and nine other states have adopted California's ZEV mandate. Washington, Maryland, Georgia and DC also have their own EV incentives, while some utility companies also offer benefits for EV owners in other states. Still, EV sales have only made up about 0.7 percent of new vehicle sales in 2014. Read more at the US Energy Information Administration website. Toyota will be using landfill gas to help power its Kentucky manufacturing facility. Beginning in 2015, Toyota's Georgetown assembly plant will use electricity converted from landfill-sourced methane gas from Waste Services of the Bluegrass. It will provide enough energy to produce 10,000 vehicles each year. Plus it diverts methane - a greenhouse gas - from entering the atmosphere and helps improve the local air quality. Learn more in the video or Toyota's press release below. Mazda has developed a plant-derived bioplastic for making exterior and interior parts. The dyed plastic doesn't require painting, and it reduces petroleum consumption and carbon emissions in the manufacturing process. The bioplastic will be used for interior parts in the all-new MX-5 before being put into use on the exterior of future vehicles. Mazda will display prototype parts at the Eco-Products 2014 exhibit in Tokyo. Read more in the press release below. Acciona will enter the first-ever zero-emissions vehicle (pictured) to compete in the Dakar Rally. The vehicle uses an electric motor and lithium ion batteries, as well as solar panels to power telemetry and security systems. The Dakar Rally will take place from January 4 through 17 through Argentina, Chile and Bolivia. See Acciona's Dakar EV in the video and read more in the press release below.