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How GM's grueling 24-hour test gets the kinks out of its performance cars

One of the biggest challenges automakers face when designing a high-performance car is making sure that it is both fast and reliable. For General Motors, any car that might be taken to the track by its owner - like the Corvette, Camaro Z/28 (shown above) and the Cadillac CTS-V, for example - undergoes a rigorous and strenuous 24-hour test by engineers at the Milford Proving Grounds, as pointed out by Car and Driver.
We've posted on this topic in the past - on a video showing the Camaro ZL1 being brutalized, for instance - but this article gives a more in-depth look at what actually happens behind the scenes... including what that poor ZL1 went through. Though the test isn't for 24 hours straight, the cars are pushed as hard as possible by some of GM's best drivers with only the brakes and tires replaced frequently.
We don't want to ruin the fun for you, but it is an interesting article that tells just some of what GM does to develop its sports cars. Check out the full article over at Car and Driver for the rest of the story.

Cadillac ELR update delayed over autonomous drive systems issues

Rumors had been circulating that the 2016 Cadillac ELR would bow in Los Angeles recently, featuring, in Cadillac's own words, "engineering enhancements." The rumors and that quote are as far as it got – the updated ELR pulled a no-show in LA, and no one outside of the brand appears to know when it will appear. GM Inside News says its sources at Cadillac pinned the ELR's absence on some autonomous driving features not being ready to reveal. According to GMI, Cadillac insiders say the upgraded ELR will be a "highly autonomous vehicle," and the company needs more time to gets its systems polished. The site says "it's not unreasonable to assume that ELR will be [the] vehicle" that gets Cadillac's Super Cruise technology, but that seems a lot more involved than "engineering enhancements," and in September Cadillac said we'd see it sometime in the next two years. It's possible the wait for the 2016 ELR and its secrets might only be a couple of months: the next-generation Chevrolet Volt, which shares a platform with the ELR and whose engineering updates we know quite a bit about, is scheduled to appear at the 2015 Detroit Auto Show in January.

GM admits Cadillac ELR no real competition for Tesla Model S

Last year, then-CEO of General Motors, Dan Akerson, made it clear that the company lookouts at the Ren Cen had California automaker Tesla in their sights. "If you want to compete head-to-head with Tesla, and we ultimately will, you want to do it with a Cadillac," he said. So, given the fact that the Cadillac ELR has a plug and sells for roughly the same price at the Tesla Model S ($75,000 vs $69,900, before incentives) and that Cadillac doesn't have any other electric vehicle on the horizon, you'd be forgiven if you thought that the way that Akerson wanted to challenge Tesla's EV success was with the ELR. Well, you'd apparently be wrong. "The ELR is a different car, it's a different price point. It's way-different technology." - GM's Mark Reuss Speaking yesterday in Detroit, GM's head of global product development, Mark Reuss, admitted that the ELR is not the Tesla competitor that Akerson promised. "People like to say the ELR is [competition for the Model S], but it's really not. It's a different car, it's a different price point. It's way-different technology." So, if we follow that logic to conclusion with Akerson's quote from last year, then the only way that Cadillac can eventually compete with Tesla is with a pure electric car, and that seems an outside chance, at best, for the foreseeable future. Through the end of July, Cadillac has sold 578 ELRs since it went on sale earlier this year. Tesla doesn't break out monthly US sales, but has sold 15,114 Model S EVs around the world in the first six months of 2014. For his part, Tesla CEO Elon Musk has already said that GM is headed down the wrong path with plug-in hybrids like the ELR or the Chevy Volt. Speaking about the Volt last year, Musk said, Chevy "sort of created something that's a bit of amphibian," which resulted in a car that's, "Okay but not great."