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Jaguar XFR debuts at the Detroit Auto Show boasting 500hp

Until today, Jaguar’s elegant XF didn’t have an R-badged derivative at the top of its range. That all changed at the Detroit Auto Show when the British marque took the wraps off a new 503-hp supercharged version of Jag’s comeback-kid four-door sedan. The same engine is also offered in the new XKR coupe, which also debuted at Detroit.

One Lap of the Web: Cutaway F1 cars, Bugatti's Blue Dream and building your own paint booth

We spend a lot of time on the Internet -- pretty much whenever we're not driving, writing about or working on cars. Since there's more out there than we'd ever be able to cover, here's our daily digest of car stuff on the Web you may not otherwise have heard about. -- Sauber Motorsports invites you to take a look under the skin in their Cutaway Insights YouTube series.

Arizona auctions: Scottsdale sales net an estimated $157 million

WITH VIDEO -- Five days of sales staged by auto auction companies in the Phoenix area pulled in a combined estimated total of $157 million, according to Hagerty Insurance. The five companies staging auctions--Barrett-Jackson, Gooding & Co., RM Auctions, Russo and Steele and Silver Auctions--offered 2,887 lots for sale and sold 2,325 of them, an 81 percent sell-through rate. A 2006 Ferrari FXX Evoluzione at the Gooding auction was listed as the top single sale with a price of $2.09 million, Hagerty said.