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Mazda's next-gen SkyActiv engines will drop spark plugs in favor of high compression

Homogeneous charge compression ignition, or HCCI, is the black art of internal combustion engines that aims to produce diesel-like fuel efficiency for the cost of gasoline. Although some of its competitors have developed and subsequently given up on the tech, Mazda confirmed that the next-generation of SkyActiv engines will employ HCCI technology, improving fuel economy by 30 percent and at the same time reducing exhaust emissions. According to Nikkei, a new SkyActiv family of engines is set to debut under the hood of the next-gen Mazda3 sometime in 2018 before making its way into other vehicles. In simple terms, an engine that uses HCCI burns the air/fuel mix using pressure instead of with spark plugs, just like a diesel. At 14:1, Mazda's gasoline engines already have some of the highest compression ratios out there, but a move to HCCI means cranking up the compression to 18:1. While the tech sounds relatively straightforward, using HCCI means dealing with a number of side issues. It's one of those "on paper" ideas that compounds problems when put into practice. Heat, revs, and fuel must all be carefully managed as gasoline doesn't burn the same way as diesel. Mazda is mum on details, but the automaker seems confident that the issues have been sorted. If the new engines do indeed make it to market with HCCI, Mazda will have out-engineered GM, Daimler, and Hyundai, all of which have tried and failed to develop HCCI engines in a cost-effective package. With the market moving towards electrification, it's interesting to see Mazda still focusing so heavily on traditional internal combustion gasoline engines. It's an indication of where they see the market heading for the next few years. Although the automaker has been hesitant to move forward with hybrid and electric powertrains, Nikkei also reports that Mazda will begin mass production of EVs in 2019. Related Video:

Jerry Seinfeld and Margaret Cho get coffee in a Mazda Cosmo Sport

The new season of Comedians in Cars Getting Coffee has already reached its second episode, imaginatively titled, You Can Go Cho Again. If it's classic Mazdas you like, you're in for a treat. In this episode, Jerry Seinfeld plays up the You Only Live Twice vibe you get from the 1967 Mazda Cosmo Sport, as it's suitably similar to the Toyota 2000GT seen it that film – in color, at least. Unlike the Yamaha twin cam six Toyota, the little Mazda is propelled by a characteristic rotary engine, which in Jerry's opinion is similarly eccentric as the episode guest Margaret Cho. The right-hand-drive Cosmo Sport is an unicorn in the States, and it's in absolutely perfect condition right down to the houndstooth upholstery. Check out the video below, or head on over to Crackle for this video along with all the previous episodes from seasons past. News Source: Crackle Celebrities Mazda Classics Videos jerry seinfeld comedians in cars getting coffee

Watch a high-speed chase from a motorcycle-mounted officer's point of view

Riding a motorcycle through high traffic can be a stressful experience. And we don't even want to imagine what it's like to have to actually pursue someone on a motorcycle. Fortunately, we don't have to. Officer Troy Gurley of the Florence, Alabama police force recently attempted to stop a vehicle for traffic violations. The driver, 24-year-old Justin Sanders, figured he could use his Mazda3 to outrun the bike cop. Turns out, not so much.
Gurley pursued Sanders for nearly five minutes as the Mazda driver ran stop signs, swerved through traffic and raced through residential neighborhoods, but the perpetrator couldn't shake the tenacious and experienced rider. Other units soon joined the pursuit, and Sanders thought it best to leave the protection of his car to attempt to flee on foot. From there, it didn't take officers long to apprehend him. You can watch the video below for yourself.