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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.

New presidential limo spotted in use for the first time

It has been a long lead-up to the new presidential limousine, but now it appears General Motors has "The Beast" in working order for President Donald Trump. The new limo was spotted in public for the first time this weekend in New York City in Trump's motorcade, reportedly on its way to Trump Tower. Said to have been in development since 2013, the $15.8 million armored Cadillac is making its debut as Trump's ride to the U.N. General Assembly this week. The grille suggests looks along the lines of a Cadillac CT6 V-Sport, but the similarities don't go much beyond that. If you look closely, Trump appears to be in the second "Beast" of the twin truck-based Cadillacs that go by in the video. The limo has a diesel engine to propel its near-20,000-pound self down the road, but we couldn't detect much of an oil-burner sound over those gigantic truck tires. This week in NYC will showcase motorcades and fancy presidential limos from around the world, all coming in for the big annual meeting at the U.N. Trump's presidential limos get shipped around the world too because they have their own plane: a C-17 Globemaster cargo carrier. There's no shortage of cool features on the new limo, and we detailed those here. While some of the awesome defense mechanisms are public knowledge, we're sure there are plenty that remain classified. New model presidential limo noticed awaiting Pres Trump at Wall Street heliport. Photo by @stevebruskCNN pic.twitter.com/lEytRcJ9rt — Mark Knoller (@markknoller) September 23, 2018 Featured video:

Cadillac tipped to call flagship something other than LTS

Cadillac wouldn't be Cadillac without large sedans in its lineup, and while the XTS has had to hold down that end of the fort all on its own, it won't have to for too long. That's because the luxury brand in the General Motors portfolio is preparing to roll out its new LTS, stylistically previewed by the Elmiraj concept pictured above. Only now, the latest thinking is that the upcoming flagship model may not be called LTS at all.
As Automotive News points out, Cadillac's naming scheme is all over the place at the moment. The ATS slotting below the CTS makes sense (alphabetically), but where do the ELR, SRX and especially the Escalade fit into that naming hierarchy? And how would LTS - as the project has been known until now - sit above the XTS?
Fortunately, Cadillac may be on the case, as two of the division's most recent senior appointments seem keen to rationalize the naming scheme. One is Uwe Ellinghaus, who joined Cadillac as chief marketing officer late last year. Speaking of the brand's nomenclature last spring, Ellinghaus was quoted as saying, "We are aware that this is currently a weakness of the Cadillac brand." And his new boss is bound to agree.