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Hennessy wastes no time in supercharging the 2015 Cadillac Escalade

The ink is still drying on the all-new 2015 Cadillac Escalade sales brochures, but that hasn't stopped Texas-based Hennessey Performance (HPE) from leaping out of the gate with its own high-performance variant. In stock form, the big fourth-generation Cadillac flagship arrives with a new small block naturally aspirated 6.2-liter Ecotec3 V8 delivering 420 horsepower and 460 pound-feet of torque. Fresh out of the showroom, the 5,900-pound SUV will sprint to 60 mph in 5.9 seconds.
While that is plenty fast for some owners, others don't want to be shamed by a 550 horsepower Mercedes-Benz GL63 AMG or a 510 horsepower Land Rover Range Rover Sport - both will leave the stock Escalade at a stoplight.
The team at HPE has come to the rescue with its HPE550 supercharger upgrade, which includes a belt-driven supercharger, air-to-water intercooler, recalibrated engine management software and a three-year/36,000 mile powertrain warranty. With 6 psi of boost, the direct-injected 6.2-liter is tuned to deliver an impressive 557 horsepower and 542 pound-feet of torque - gains of 32 percent and 18 percent, respectively, over stock. Although HPE isn't releasing performance figures as of yet, our math says that should be enough power to put the two Europeans in the Cadillac's rearview mirror. The company also offers a set of 20-inch lightweight H10 forged monoblock wheels, to further improve performance.

Cadillac dealers get $5,000 incentive for ELR test drives

The 530 Cadillac dealers - out of 940 total dealers - that signed on to sell the brand's ELR for $75,000 or lease it for $699 per month have managed to move 247 of them in the last five months. That's a little less than two cars for each dealer more than two dealers for each car if you need help with the math. With inventories of the luxury plug-in hybrid building up - Automotive News reports a 725-day supply - General Motors has created the Demonstrator Allowance Program to billow the sails on that slow moving ship, giving dealers $5,000 to promote ELR test drives.
A dealer with one ELR in its test fleet that racks up 750 test driven miles between May 1 and June 2 earns the fifty Benjamins, a dealer with two ELRs in the test fleet will get one hundred Benjamins. That will be added to summer incentives for dealers that pay $2,000 for units sold in July and $1,000 for units sold in August, while on the customer side, Cadillac has put "customer discount certificates" worth $3,000 on the hood for buyers and lessees.
Cadillac suggests this is about raising awareness of the ELR, but the question is how much dealers will be able to do for a car that observers - and buyers, apparently - still consider highly overpriced.

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.