To clean a floor by removing water soluble stains and soil. To clean the contents of an entire folder, you simply specify a folder name instead of a file, then press enter. Whenever we send a webhook, we take this shared secret, combine it with the contents of the webhook by using a cryptographic hash function called HMAC, and get back a long, random-seeming, but entirely deterministic “signature” for the webhook. A new high-performance two-seat Caddy convertible was also on tap for 2004. Called XLR, in line with the brand’s adopted three-letter name scheme, it was basically a C6 Corvette engineered to Cadillac standards of quality and refinement. But the most exciting upgrade was underhood, where Cadillac found room for the 5.7-liter (346-cid) LS6 V-8 from the contemporary C5-generation Corvette Z06. The regular XLR got it as a 2007 upgrade. Even so, the XLR was clearly a luxury tourer, not an all-out sports car.

A V-Series XLR was a foregone conclusion, and it arrived for 2006 hewing to the CTS-V formula: understated exterior, “tech-look” interior, big power, even more-dynamic handling. In fact, Team Corvette developed the XLR before working in earnest on the C6, and that experience benefited the Corvette. The ’06 version nominally broke the $50,000 barrier, but some of the increase reflected swapping in the 6.0-liter LS2 V-8 from the year-old C6-generation Corvette. Car and Driver’s test XLR-V did 0-60 in just 4.7 seconds and a standing quarter-mile of 13 seconds at 110 mph — a noticeable improvement on the unblown version. A heavily revised “Gen II” version of the respected 4.6 Northstar V-8 boasted new cylinder heads with freer-flow ports and higher compression (10.5:1), plus a stiffer block and crank, redesigned manifolds, and “by-wire” electronic throttle control. Interiors were spruced up for 2007 with a redesigned dashboard and higher-quality materials in response to press and consumer complaints. Stats like that implied race-winning potential, and Cadillac wanted the positive press that goes with winning races.

For starters, the XLR design was new-school Cadillac, though a bit old news, having been accurately previewed by the Evoq concept convertible back in 1999. Also, the XLR came only as a hardtop convertible, with a power-retracting solid roof that pirouetted into the trunk like that of main rivals Mercedes SL and Lexus SC 430 (and left as little luggage space). The XLR also differed in dimensions, being a bit longer, taller, slightly narrower, and some 450 pounds heavier than a ragtop C6. The XLR was easy to dismiss as just a Caddy in Corvette clothing, but there were many key differences. Cadillac built 2401 CTS-Vs for 2004. Another 4194 issued forth for ’05, when the only changes were monetary: a $190 bump in starting price (there were still no options) and a tacked-on $1300 Gas-Guzzler Tax. The price was right, too. Other upgrades included a massive four-piston Brembo-brand disc brake at each corner and meaty 245/45ZR18 Goodyear run-flat tires on special seven-spoke alloy wheels spreading 8.5 inches wide. In some cases, there are no excess liquids, reducing the cost and hassle of storage and spreading. Eventually, there was a Hoover vacuum cleaner in nearly every home. Shake the solution before spritzing the stinky areas of your home – like around trash cans or inside the bathroom.

We also like that it doesn’t contain any soaps, scents, or dyes that leave streaky residue behind. More proof came with a mandatory six-speed manual transmission, the same Tremec T56 unit used in the ‘Vette, but relocated from the rear to just behind the engine. Chassis tweaks involved wider 19-inch run-flat tires, a solid front stabilizer bar, the addition of a rear bar, revised tuning for the MRC shocks, and larger brakes borrowed from the Corvette Z51. Though the initial $76,000 tab was almost twice that of a base Corvette coupe, the XLR came with most every amenity known in the automotive world: power everything, heated/cooled seats, OnStar, a navigation system, “smart” cruise control that automatically maintained a safe following distance, and Cadillac’s new Keyless Access system with engine-start button and no external keylocks. How did the XLR fare with critics and buyers? Buyers could choose five-passenger seating with a fore/aft sliding back bench or an available seven-passenger package with the convenience of a power-folding third-row seat.6 square feet of the great outdoors. For those who craved the V-Series’ looks but didn’t need its testosterone, a Wheel Sport Appearance package arrived during the ’06 model year to dress up the mainstream 3.6 CTS, one of the few alterations that season.