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So, just how different are the Fiat 124 Spider and Mazda MX-5 Miata?

"We leveraged a great platform." That's how Bob Broderdorf, Jr., Fiat's North American director, summarizes the creation of the 124 Spider. We all know Fiat's new roadster shares its underpinnings with the fourth-generation Mazda MX-5 Miata, but there are a lot of key differences to keep them separate in the eyes of consumers. Mazda may have engineered the platform, but Fiat added many of its own touches. Here, we'll take a closer look at the spec sheets of the two cars, and summarize the major differences between the Japanese and Italian roadsters. If you need a refresher, read our full First Drive of the 2016 MX-5 Miata, and glance at all the Fiat 124 Spider details in this post. Design Fiat Chrysler design lead Ralph Gilles is super excited about this car. "I think it's going to change lives," he told the assembled media at an event in Auburn Hills, MI, earlier this month. Yes, it's definitely exciting to add a small roadster to any lineup, especially one that uses such a proven platform. But we're not sure people are going to get all that jazzed about it from a design standpoint. You'll either love it or hate it, and we're kind of leaning toward the latter. Every single body panel is new, and the design is "100 percent Italian." There are a number of creases and angles throughout the exterior, with a squared-off rear end and rectangular taillamps. Fiat trusts you'll be able to spot the similarities between the new 124 Spider and the original, but we're not so sure. We can see a bit of the old car's grille on the new car's face, and the dual hood blisters are a nice throwback touch, but that's about it. Trust us when we say that this car looks way better in photos. In person, it really didn't wow us. Of course, beauty is in the eye of the beholder. One colleague told us his wife, a long-time Miata owner, hates the look of the new one but will absolutely adore the Fiat. Good for her, and good for Fiat. But based on design alone, we'll take the Mazda every single time. What about you? Dimensions When Broderdorf said Fiat leveraged the Miata's platform, that means the Italians took it as-is. The two cars ride on an identical, 90.9-inch wheelbase. The front and rear tracks lengths are the same, at 58.9 and 59.1 inches, respectively. But that's where the similarities end.

Petrolicious lets a 1971 Mazda RX-2 howl

Rotary engines scream to the heavens in the best way possible. To hear a wonderful example of the Wankel's battle cry, turn up your speakers and watch Petrolicious highlight an immaculately clean 1971 Mazda RX-2 in Australia. Owner Jason Humble took three years to build his RX-2 from a bare shell, and he started competing with it in vintage racing in 2005. The little coupe's class pits it on track against Mustangs and Camaros, but Humble claims that he's regularly near the top of the pack thanks to the Mazda's communicative chassis. We don't get to see the RX-2 mixing things up on track in the Petrolicious video, but Humble does treat us to a drive through the Australian countryside. He's happy to let the coupe's rotary rev, and the little engine is capable of making a wonderful noise. It's great to see Petrolicious continue to give the spotlight to these sometimes overlooked classic Japanese sports cars.

Automotive Grade Linux will be the backbone of your connected car

Creating a backend for a secure, reliable, and expandable infotainment system is costly and time consuming. The Linux Foundation, a non-profit organization, has set out to promote and advance the Linux operating system in commercial products. Automotive Grade Linux, or AGL, is a group within the Foundation that seeks to apply a Linux backend to a number of automotive applications in a variety of vehicles from various suppliers and manufacturers. AGL's goal is to create a common, unifying framework that allows developers and manufacturers to easily implement applications across platforms. Currently, the focus is on infotainment systems, but AGL has plans for instrument clusters, heads-up displays, and eventually active safety software. At CES, a display from Panasonic showed a completely digital and customizable dashboard that allows information and apps to be moved from the gauge cluster to the infotainment screen and back, all through the use of gesture and touch controls. Although the organization has been around for five years, it's really only been in the past three that the group has been working hand in hand with automakers and suppliers. The first two OEMs to participate, Toyota and Jaguar Land Rover, have since been joined by Mazda, Suzuki, Ford, and, as of this week, Daimler. The latter is important as until now most of AGL's partner's have been based in Japan or the US. Other partners include suppliers Denso, Renesas, Continental, Qualcomm, and Intel. AGL want's to supply roughly 80 percent of the backend, allowing partners to then finish and refine the Linux system for each individual application. Think of how the Android operating system is refined and customized for individual smartphones from Samsung, LG, and Motorola. While the final product looks different, developers can have an application that will work across all AGL systems. Because it is open source, anyone can use and develop for AGL. You can even go onto the group's website and download a copy right now. There is also a software development kit available that helps facilitate app creation on the platform. Vehicle development cycles take roughly five years, so there currently are no cars that run an AGL backbone available for consumers. AGL Executive Director Dan Cauchy says products should be hitting the market later this year, with even more coming in 2018. Right now, the industry is relatively fragmented when it comes to infotainment and related systems.