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One Lap of the Web: A homebuilt KITT, and Tacoma vs. your girlfriend

Hagerty is profiling a homemade version of KITT from the "Knight Rider" TV series. Builder Chris Palmer needed five Pontiac Trans-Ams, tons of visits to eBay and hundreds of hours of work with help from friends. Check out the result here.

VW reveals plug-in diesel hybrid concept, claims 261 mpg

Volkswagen has used a car show in the Middle East nation of Qatar to unveil a two-seat plug-in hybrid concept car that the automaker says will deliver 261 mpg. The VW XL1 uses a lithium-ion battery pack, an electric motor and a two-cylinder, 0.8-liter diesel engine for the powertrain. We're still digesting the press release, but here are some highlights: -- VW says the XL1 can travel about 22 miles on electricity from the battery pack.

2012 Mercedes A-Class revealed in patent filings

The slightly drab 2012 Mercedes A-Class Car makers must hate filing for patents on new cars, because it means trusting images of their new and secret car to a third party. Basic images, admittedly, but the real-deal nonetheless. So Mercedes must be spitting feathers today as the images they sent with their patent applications on the 2012 A-Class leak out of every open window, door and PC and straight on to the interweb.