Standard Motor Products 954a Carburetor Kit on 2040-parts.com

Mystery Mercedes 600 six-door Landaulet heads to auction

There are ambitious project cars, and then there is this: a 1971 Mercedes-Benz600 Six-Door Pullman Landaulet that'll be offered at RM Auctions' Retromobile sale in Paris on Feb. 5. One of just 26 built, this example was recently rescued from the state motor pool of an unnamed African country with the consignor unwilling to reveal the car's exact provenance.

One Lap of the Web: Elon Musk's Hyperloop, Greenwich Concours and a Model T

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. The 2013 Porsche Rennsport Australia went off over Memorial Day weekend at Sydney Motorsports Park and motorsportretro.com has full gallery of pictures.

Ferrari 458 Speciale with active aero debuts at Frankfurt

The only thing better than a 458 is, of course, a lighter, stronger and more aerodynamically efficient 458. Toward that end, Ferrari unveiled the 458 Speciale at Frankfurt, a successor of sorts to the Challenge Stradale and 430 Scuderia, previous specials that, as good as they were, wouldn't last a race on the same lap as this one. “This is the most powerful V8 Ferrari, never made before,” said Ferrari chairman Luca di Montezemolo, who still speaks much better English than we could ever hope to speak Italian.