1973 Cadillac Eldorado Convertible Red on 2040-cars

Auto blog

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 partners with Saks Fifth Avenue for limited-edition ELR

There's no softening the blow with this one - this is the limited edition 2014 Cadillac ELR Saks Fifth Avenue Edition, and it costs $89,500, including $995 for destination. The special model, limited to just 100 units, is part of a holiday season collaboration between Cadillac and luxury retailer Saks Fifth Avenue. In addition to the ELR, there will also be a special "Frozen Escalade" window display at the Saks Fifth Avenue flagship store near Rockefeller Center in New York City, which will feature the 2015 Escalade with functioning LED running lamps that, as the automaker says, "appear embedded and breaking through a wall of ice."
But back to that ELR. This Saks edition plug-in hybrid coupe commands a surcharge of $14,500 over the $75,000 base model that over 85-percent of Autoblog readers polled already feel is overpriced. For that extra coin, you get an ELR wearing exclusive (to this car) White Diamond paint matched with either a jet black or light cashmere interior. Buyers will also receive an upgraded 240-volt charging station complete with professional installation, and the cars come with Cadillac's ELR Concierge service - representatives "trained in white-glove customer care" that serve as an additional point of contact beyond the dealership when it comes to topics like like battery care, charging, service scheduling and news updates.
Folks who order the Saks Fifth Avenue ELR are expected to receive their cars in March of next year. Price aside, we're sure it'll look great parked alongside the Neiman Marcus Aston Martin Vanquish Volante in owners' garages. Scroll down for Cadillac's official press blast.

GM claims it's first to sell million 30+ mpg vehicles

As we continue to put together all the data for the year-end edition of By The Numbers, General Motors has announced that it sold more than a million vehicles in the US last year that achieved at least 30 miles per gallon on the highway. More impressively, GM managed this feat using multiple strategies including small vehicle size, turbocharged engines and hybrid or plug-in technologies across four brands (Buick, Cadillac, Chevrolet and GMC) accounting for 13 separate models. This number will grow even more in 2013 thanks to cars like the all-electric Spark, the diesel Cruze, the range-extended Cadillac ELR and the Buick Encore compact CUV.
GM's small car sales were up 39 percent last year helping to attain this million-sales mark for 30-mpg models, and almost 40 percent of all GM sales consisted of cars with fuel-efficient I4 engines. In regards to more advanced means of improving fuel economy, GM says that it plans on having 500,000 vehicles with "some form of electrification" on the road by 2017.
Scroll down for the full list of GM's million 30+ mpg cars as well as an informative press release.