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Porsche 911 Turbo and Nissan GT-R Nismo star in World's Greatest Drag Race 4

We love Motor Trend's annual World's Greatest Drag Race video. Now back for its fourth appearance, the idea of lining some of the world's fastest cars up for a ten-wide, straight-line, full-throttle run is, well... it's pretty freaking badass.
The lineup this year boasts some impressively fast cars to be sure. The group of ten includes the following darlings: Alfa Romeo 4C, BMW i8, BMW M4, Chevrolet Camaro Z/28, Ford Fiesta ST, Jaguar F-Type R Coupe, Nissan GT-R Nismo, Porsche 911 Turbo S, Subaru WRX STI and, last but not least, the Volkswagen GTI. Give us any one of those for the weekend, and we're happy to take the keys.
It must be said though, that for a publication that draws as much water as Motor Trend does, there are some big cars that we might expect to be here instead. The Lamborghini Huracán or Ferrari 458 Speciale would have added some exotic flare to the list, and the omissions of the Chevy Corvette Stingray (for the second year in a row) and the Dodge Challenger Hellcat are real head-scratchers.

Ford finds flex-fuel engine design plays big role in emissions output

How bad is ethanol for your engine? There's been a lot of debate on this issue as the US considers upping the biofuel content in the national gasoline supply from 10 percent (E10) to 15 percent (E15). The ethanol industry and some scientists say higher ethanol blends show no "meaningful differences" in new engines while the oil industry says ethanol creates health risks. Researchers working at the Ford Research and Innovation Center decided to take a closer look at how a wide range of gas-ethanol blends - E0, E10, E20, E30, E40, E55 and E80 - affected the emissions coming out of a flex-fuel 2006 Mercury Grand Marquis. To see the full report, printed in the journal Environmental Science & Technology, requires payment, but there is an abstract and Green Car Congress has some more details. The gist is that, "with increasing ethanol content in the fuel, the tailpipe emissions of ethanol, acetaldehyde, formaldehyde, methane, and ammonia increased." At least NOx and NMHC emissions decreased. The researchers say that the effects are due to the fuel and "are expected for all FFVs," but that the way that a manufacturer calibrates the engine will affect NOx, THC, and NMOG emissions. It's this last bit that's important, since the researchers found, "Higher ethanol content in gasoline affects several fundamental fuel properties that can impact emissions. ... These changes can have positive or negative effects that can depend on engine design, hardware, and control strategy. In addition to direct emissions impacts, higher ethanol content fuel can also provide more efficient combustion and overall engine operation under part-load conditions and under knock-limited higher-load conditions." So, as we head towards more ethanol in our fuel supply (maybe), manufacturers are going to need to learn how to burn it most efficiently.

Ram and Alfa Romeo top J.D. Power study of best automaker websites

Imagining a new car can be terrific fun, especially if the new car is an Alfa Romeo. So say the fantasy engineers at the J.D. Power agency, who’ve found that Alfa and Ram, sister brands under the Stellantis umbrella, offer potential buyers the most attractive consumer websites, which are often their first viable encounter with those vehicles. Power found that those marques lead the mass market and premium categories in its twice annual Manufacturer Website Evaluation Study. In the premium segment, Alfa Romeo led with 755 points, up six points over BMW, 10 points ahead of Infiniti, 14 points past of Jaguar, and 18 points up on Porsche. By contrast, Volvo and Audi trail the pack with 689 points, and are behind Genesis (699 points), Tesla (720), and Cadillac (721), all of which perform worse than the premium segment average of 724 points. The summerÂ’s study showed that in the mass market segment, Ram leads with an impressive 735 points, which puts it six points ahead of GMC, seven points atop its stablemate Jeep, eight points beyond Subaru, and 22 points ahead of the industry average. Volkswagen finished dead last among mass market names, but only one point behind Ford, 684 to 683 out of a possible 1,000. Segment average, as noted, was 713 points. “Website satisfaction can be volatile, and automotive websites are not immune to changing preferences,” said Jon Sundberg, director of digital solutions at J.D. Power. “However, manufacturers have shown to be very agile when it comes to website design and ensuring their sites meet modern standards, more so than many other industries, as exemplified through the study data.” Marketing/Advertising Alfa Romeo Audi BMW Ford Volkswagen