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Mazda6 diesel to race at Rolex 24, team and drivers announced

Mazda is getting serious about showing off the Skyactiv-D turbo-diesel four-cylinder engine in the Mazda6. The automaker has just announced it will campaign three diesel Mazda6 racers in the Grand-Am GX class of the upcoming 2013 Rolex 24 at Daytona in a quest to walk away with the company's 24th class win. Mazda partnered with SpeedSource to develop the race version of the new sedan, with Japanese and American engineers lending a helping hand where needed. Meanwhile, Freedom Autosport and Visit Florida Racing/SpeedSource/Yellow Dragon Racing will helm teams of their own.
Each car will make use of a five-driver team for the 24-hour race on January 26. In the interim, you can check out the full press release below for more information as well as the full driver roster. Mazda says we can expect to see the No. 70 SpeedSource car under the lights at the 2013 Detroit Auto Show later this month, as well.

Cedar Rocket is the fastest all-electric log car in the world

An electric turbine manufacturer, a mechanic, and a log house builder walk into a bar. No, wait. The three are standing around at Barrett-Jackson a few years ago, talking about the world. What's the eventual punchline? An all-electric vehicle mash-up of a Mazda RX-8 and a giant piece of wood. One that was just awarded a Guinness World Record for "fastest motorized log." "Truly, what else would you think of?" - Bryan Reid, Sr. Bryan Reid, Sr., star of the reality show Timber Kings, is the log house builder in the set-up above, and he's now the proud owner of Cedar Rocket. He told AutoblogGreen that a log-based EV is the natural result of the three guys chatting. "Truly, what else would you think of?" he said. "I mean, really? There has to be something to come out of it other than girls. It was crazy, but it's a good story and nobody gets hurt. It's hard to make the news when everything's positive." Idea in hand, Reid and his friend set off to actually build the car. Gerald Overton, the mechanic, turned the Mazda into a welcoming recipient, working on the disc brakes, axles, frame, differential, and suspension. While the presence of a television producer kept things moving, Reid said that it still took almost two years. "It started out, not as a joke, but as something very light," he said. "You put a log on a couple of axles and 'ha ha.' It ended up taking many thousands of hours. We don't do anything halfway." In the end, Reid and the team took the Cedar Rocket to the Wild Horse Pass Motorsports Park in Chandler, Arizona and managed two runs of 55 miles per hour within an hour (that's what Guinness required to hand out the official record). The Rocket is incredibly stable – heavy batteries help there – and Reid pointed out that because the EV uses electric turbines, it's not a quarter-mile car. "It's more like a salt-flat car," he said, because the "turbines that take a while to spin up." Given the right conditions, Reid said the team thinks the Cedar Rocket could go 120-130 mph. "It's crazy because it's different." But the point of this car isn't to just go fast. The builders will bring the car to Barrett-Jackson and auction it off next year, but before that it will make the rounds at places like SEMA and a number of unexpected events, like golf shows. The point is to get attention and raise money and awareness for veterans groups. "I believe it's for the best cause in North America," he said.

Mazda G-Vectoring Control makes driving better without you knowing

Mazda has just spent eight years developing a new technology that will make its new cars a lot more fun to drive, even if you have absolutely no idea that it's working. And subtlety's the point, Mazda engineers told us at a press event at Mazda Raceway Laguna Seca. In fact, the effects of what they've dubbed G-Vectoring Control are so fine that the marketing and PR teams are at a loss for how to do their jobs with it. "The engineers have done their work," said Mazda Director of Communications Jeremy Barnes, "But how do we get the message across?" The basic premise is this: G-Vectoring activates only when the car's on-board computer reads simultaneous steering and throttle input. The data — including throttle position, steering angle, and, crucially, how quickly you're adjusting the steering angle — are then funneled through an algorithm to reduce engine torque, which transfers vehicle weight, adding more grip to the wheels that need it. The system will appear first on 2017 Mazda6 sedans arriving in showrooms later this year, followed by the 2017 Mazda3. Actually, "subtle" does not even begin to describe the effect. G-Vectoring Control can detect as much as one tenth of one degree of steering angle, and changes the cornering forces only 0.1 to 0.5 g as a result. "That's less than the human body can feel," explained Vehicle Development Engineer Dave Coleman. In practice, G-Vectoring reduces the steering angle at turn-in, as well as the rate at which one turns the wheel. To demonstrate, Director of R&D Kelvin Hiraishi rode shotgun with us in a specially equipped Mazda6 that allowed him to turn G-Vectoring on or off at the push of a button (production cars will always have it on). Hiraishi had us drive a number of courses, including Mazda Raceway Laguna Seca itself, while an engineer measured our steering inputs with a laptop Matrix'd into the car's electronic brain. I drove the same course several times with the same car in the same conditions, with cruise control locked and the system turned on or off. Lo and behold, with G-Vectoring activated, the engineer's output graph showed that my steering inputs were indeed reduced ever so slightly. There were two times that G-Vectoring was markedly noticeable. The first on a turn with a minor banking toward the outside, and the second was during cornering over an artificially wet section of the course — in other words, when the car was at the limits of adhesion.