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First 2015 Chevy Corvette Z06 engine blows up at just 891 miles

You've waited and watched and waited some more for the arrival of your 650-horsepower, $78,000 Chevrolet Corvette Z06. Finally, that joyous day arrives and you eagerly, but gingerly, begin to break-in the 6.2-liter supercharged V8 monster under your hood. Then 900-odd miles after delivery, your excitement grinds, quite literally, to a halt. That's what the owner of one 2015 Z06 claimed happened to him when a simple break-in drive resulted in a lunched engine. The owner, known as Lawdogg149 on Corvette Forum, says he was out breaking-in his car ahead of a January track event when it happened. "While making a pull from 35 miles per hour, I accelerated and shifted short of redline, and boom - the car began knocking. I pulled over and popped the hood. I could hear a loud knock coming from the No. 6 cylinder area along with a serious, grinding, metal-on-metal sound coming from the supercharger area," Lawdogg wrote. A subsequent trip to the dealer confirmed his concerns, with the service facility telling Lawdogg that the No. 6 valvetrain had failed. The dealer couldn't research the issue further, though, as General Motors requested the engine be returned for a more thorough evaluation. The good news for the Z06's unlucky owner, at least, is that GM will be covering the engine replacement under warranty, an expense that Corvette Forum estimates is a nearly $24,000 procedure. At this point, the two leading theories behind the engine's detonation involve a manufacturing defect – which could be why GM is so keen to tear the blown powerplant down – or a mistake on the part of Lawdogg. As Motor Authority points out, such an error could be something as simple as the Z06's owner accidentally shifting to first rather than third during his 35-mph pull. If, however, there's a deeper manufacturing problem with the Z06's engine, this might not be the only case we end up hearing about.

This map reveals the cleanest vehicles based on location

Naysayers love to point out how dirty the electricity grid mix is when it comes to charging electric vehicles. Curmudgeons are eager to jump into any conversation about EVs to enlighten the lucky listeners about how plug-in cars contribute to pollution, sometimes even throwing in a dash of climate-change denial for good measure. (Thanks, buddy. Pray, tell me more about the plight of oppressed SUV owners.) Unless someone buys an EV just because they think they're cool (which, yeah, they often are), they probably have at least a passable understanding of their environmental pros and cons. As many EV owners are already aware, location has a lot to do with any particular plug-in car's carbon footprint. Still, there's always more to know, and knowledge is not a bad thing, especially if one uses it to do the right thing. That's why this handy-dandy map from Carnegie Mellon University is so interesting. CMU researchers have compiled information about the lifecycle greenhouse gas emissions of various EVs based on where they're charged, as compared to gasoline-powered vehicles. The researchers looked at the Nissan Leaf, Chevrolet Volt, and Prius Plug-In Hybrid versus the gasoline-dependent Toyota Prius hybrid and the stop-start-equipped Mazda3 with i-ELOOP and compared grams of CO2 emitted per mile. CMU takes into account the grid mix, ambient temperature, and driving patterns. CMU takes into account the grid mix based on county, as well as ambient temperature and driving patterns in terms of miles traveled on the highway or in the city. For instance, if you drive a Nissan Leaf in urban areas of California, Texas, or Florida, your carbon footprint is lower than it would be if you were driving a standard Toyota Prius. However, if you charge your Leaf in the Midwest or the South, for the most part, you've got a larger carbon footprint than the Prius. If you live in the rural Midwest, you'd probably even be better off driving a Mazda3. Throughout the country, the Chevrolet Volt has a larger carbon footprint than the Toyota Prius, but a smaller one than the Mazda3 in a lot of urban counties in the US. The Prius and Prius Plug-In are relatively equal across the US. Having trouble keeping it straight? That's not surprising. The comparisons between plug-in and gasoline vehicles are much more nuanced than the loudest voices usually let on.

Jeff Gordon to pace Indy 500 in Corvette Z06

The Chevrolet Corvette has served as pace car for the Indianapolis 500 more than any other vehicle in the century-long history of the race. And this year it'll be at the front of the pack again in the form of the Corvette Z06 driven by Jeff Gordon. With 650 horsepower on tap, the Z06 is among the fastest, most powerful cars ever to serve as pace car for the Greatest Spectacle in Racing – right up there, at any rate, with the ZR1 that led the field in 2012 and the Viper GTS from 1996. For this year's race, it's been decked out in white with special graphics, strobe lights and a red interior. The 99th running of the race will mark the 13th time a Corvette has been tapped for the honor. Gordon, a name better known to NASCAR fans, but certainly no stranger to the track, will handle driving duties. The four-time Sprint Cup champion has won the Brickyard 400 no less than five times, including the very first time it was held back in '94. No driver has won at Indy more than Gordon – a record he shares with Michael Schumacher, who won the US Grand Prix there five times. (AJ Foyt, Al Unser and Rick Mears share the record for Indy 500 victories at four apiece, in case you were wondering.) It'll be a busy Sunday for Gordon, who will also be competing in the Coca-Cola 600 at Charlotte on the same day. Jeff Gordon to Drive Corvette Z06 Indy 500 Pace Car Five-time Brickyard winner will lead pack for 99th running of the Indianapolis 500 2015-04-29 INDIANAPOLIS – Five-time Brickyard 400 winner and four-time NASCAR Sprint Cup champion Jeff Gordon will drive a Corvette Z06 pace car for the 99th running of the Indianapolis 500 mile race, May 24 at the Indianapolis Motor Speedway. It is the 13th time a Corvette has served as the official pace car, dating to 1978, and the 26th time a Chevrolet has led the pack for "The Greatest Spectacle in Racing." Corvette has served as the pace car more than any other vehicle in the race's history. Gordon, who grew up in nearby Pittsboro, Ind., is no stranger to the Indianapolis Motor Speedway. In 1994 he won the inaugural Brickyard 400 – the first-ever NASCAR race at the Brickyard, and has visited the winner's circle there four more times. That makes him one of only two five-time winners at Indy in any series. Michael Schumacher won five Formula One races there. "It's great to have Jeff Gordon serve as this year's pace car driver," said Jim Campbell, Chevrolet U.S. vice president of performance vehicles and motorsports.