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One Lap of the Web: Mercedes-Benz SLC rendered, Google Glass for the Tesla S and a rusty Datsun 280ZX

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. -- Last month we brought you some intriguing spy photos of a Porsche 911-fighting Mercedes-Benz coupe -- possibly to be called the SLC, or even the next SLS AMG (it's all a bit unclear at this point) -- but layers of camouflage made it a bit tough to see what the car will look like.

Rolls-Royce teases Wraith before Geneva motor show

Rolls-Royce has revealed the first actual photo of the upcoming Wraith coupe, which will debut at the Geneva motor show in March. The first teaser image was just smoke in the shape of the Spirit of Ecstasy hood ornament, but this photo shows the actual shape of the car. Last week we reported that the big coupe will most likely carry a 6.0-liter V12 engine that should create about 600 hp, and that the car will be about 7 inches shorter than the four-door Ghost.

Jaguar BlackJag 2004 concept car up for sale

It's not often that a former auto show concept is offered for sale, mostly because of buzzkill stuff like government crash standards, emissions compliance documents and other boring paperwork. But it does happen from time to time, such as when General Motors sold off a chunk of its Heritage Collection -- though most of those cars were sold without titles, just on bills of sale, which prevents them from being registered for road use. This week there is (allegedly) a 2004 Geneva motor show concept for sale -- a running concept car for that matter -- with a steep price to go along with it, as GTSpirit has discovered.