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Hello, Siri? Please don't crash the car

Hands on the wheel and eyes on the road? You could still be distracted while driving. Voice-recognition software that many automakers tout as a safer alternative to handheld devices can still divert drivers' attention, a new study published by AAA found. Researchers noted that workload ratings were the highest on their scales when participants in the study used Siri. The technology is alluring because it allows drivers to do things like change the radio station or compose a text message without removing their hands from the wheel or their gaze from the road. But many of those tasks increase a driver's cognitive workload. Depending on the situation, that can be dangerous. "It's especially problematic, because you can be distracted and not know it," J. Peter Kissinger, president of the AAA Foundation for Traffic Safety, told Autoblog. "That's the nature of mental distraction. It's hard to appreciate. ... Often, you don't know you're distracted until it's too late." There's significant variation in the results of the study. Simple, single-task car commands for operations like changing the radio station caused minimal increases in workload, about the same as listening to an audio book. Composing information using speech-to-text technology was more burdensome, and using menu-based functions caused a high level of cognitive workload. Siri-based interactions posed the highest levels of distraction, according to AAA. Researchers noted that workload ratings were the highest on their scales when participants in the study used Siri, and two of the three simulator crashes they observed during the study of 36 participants came while the subjects were interacting with Siri. The subjects weren't looking at nor making contact with their iPhones during these interactions. "Common issues involved inconsistencies in which Siri would produce different responses to seemingly identical commands," the researchers wrote. "In other circumstances, Siri required exact phrases to accomplish specific tasks and subtle deviations from that phrasing would result in a failure. ... Some participants also reported frustration with Siri's occasional sarcasm and wit." It wasn't just the complexity of the task that caused variations in level of distraction – the variations could also be dependent on the particular make and model of the car being tested.

Toyota claims hydrogen fuel cell breakthrough

Platinum isn't cheap. And it's a necessary component of hydrogen fuel-cell technology. Which means that Toyota's recent discovery of a way to better analyze how platinum breaks down is a bit of an H2 vehicle breakthrough. Toyota worked with the Japan Fine Ceramics Center (JFCC) to observe nanometer-sized platinum particles and, specifically, how they deteriorate. Platinum is used as a catalyst for when electrons are stripped away from the hydrogen molecule to create an electrical charge and when hydrogen ions and electrons mix with oxygen to create water vapor. So, when platinum gets more course during the countless chemical reactions inside of fuel cells, things slow down. Now that Toyota says it's figured out a better way to observe this process, greater efficiency and durability within the fuel-cell process of electricity production are likely to follow, though more chemistry study will be needed to figure out how that will work. Still, it's topical because Toyota last year started producing the world's first production hydrogen fuel-cell vehicle. The Japanese automaker debuted sales of the Mirai fuel-cell vehicle in Japan late last year and plans to start selling the car in California this fall (the car will be priced at $57,500). Toyota also plans to boost Mirai production to about 2,000 units in 2016 from about 700 this year. Take a look at Toyota's documents and video below. R&D Breakthrough Sets Stage for More Efficient, Durable Fuel Cell Stacks Toyota City, Japan, May 18, 2015—A breakthrough in the real-time observation of fuel cell catalyst degradation could lead to a new generation of more efficient and durable fuel cell stacks. Toyota Motor Corporation and Japan Fine Ceramics Center (JFCC) have developed a new observation technique that allows researchers to monitor the behavior of nanometer-sized particles of platinum during chemical reactions in fuel cells, so that the processes leading to reduced catalytic reactivity can be observed. Platinum is an essential catalyst for the electricity-producing chemical reactions occurring between oxygen and hydrogen in fuel cell stacks. Reduced reactivity is the result of "coarsening" of platinum nanoparticles—a process whereby the nanoparticles increase in size and decrease in surface area. Up until now, however, it has not been possible to observe the processes leading to coarsening, making it difficult to analyze the root causes.

New BBC Top Gear season is off to a great start

The past few years have been very demanding for Top Gear fans. The Jeremy Clarkson Top Gear got too big for itself, and the core quality of the series degraded as stunts and jokes gradually became more and more stale. Things came to a head with the Fracasgate, with Clarkson punching a producer in a very nice hotel in Yorkshire with a very nice brass plaque commemorating "The End of Clarkson's BBC Career". Fast forward to a year ago, when the BBC produced a new series of Top Gear, with famed breakfast show person and shouting enthusiast Chris Evans hosting. Laden with personnel and curiously lacking any direction, the first new season collapsed onto itself with Evans eventually quitting the entire shindig. After that, viewers received a new, Amazon-produced Clarkson-Hammond-May series called The Grand Tour, which was often brilliant and just as often hampered by writing as hackneyed as the last Clarkson years of Top Gear. Now the slate is clean. Evans is gone. The first Grand Tour season has aired. The BBC has had a good long time to re-evaluate its strategy. And the first episode of this season's Top Gear has aired in the UK - and will air March 12 on BBC America. Your first extended look at all new #TopGear, coming 5 March. See you there pic.twitter.com/lYoYOtrWxR — Top Gear (@BBC_TopGear) February 23, 2017 What an improvement! It seems like the producers have taken an ax to everything not strictly necessary for making a great car show, and they've left what is absolutely crucial. There are the three car guys, Matt LeBlanc, Chris Harris and Rory Reid. There is a new studio. There is a new track car. There is a celebrity, but it's not painful to watch. There are easy jokes, there are car jokes, there are Ronin jokes. Ronin jokes! It's as if Harris, by dissecting continuity errors in the 1998 film's BMW chase, is reaching out to us fans, saying he's one of us, and he did notice the wrong wheels when the black BMW falls from the bridge. (Other mistakes are wrong-colored tach needles, for instance.) The first car film is a quality Ferrari FXX K piece, with Harris enjoying one of the 40 built track-day specials on the bankings of Daytona. It's remarkable it was Harris who was allowed to drive the exclusive Ferrari, as the first "outsider" (in his words) to drive one; years ago Harris was one of the most vocal critics of Ferrari's practices, resulting in him getting banned from driving press Ferraris. But then again, this is a customer car.