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One Lap of the Web: Porsche 959s, the Alfa Romeo 4C and the Mercedes-Benz A45 AMG vs. the BMW M135i

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. -- When initially produced to satisfy FIA homologation requirements in 1986, the Porsche 959 was the world's fastest street-legal production car.

Vauxhall Rake concept (2011) at Frankfurt motor show

Alongside the Astra GTC and Zafira Tourer, Vauxhall (and thus Opel) is unveiling something a little more ‘out there’ at the 2011 Frankfurt motor show. It’s this tiny city car, known by Vauxhall as RAK e, and which we’re going to call the Rake. The name is a modern take on the Rak 2, a rocket-powered Opel that hit 140mph in 1928.

Lightning GT

The Lightning GT is a fresh take on all-electric mobility; a performance car with unabashed sports car proportions. Made from carbon skin draped over the chassis architecture, the dynamic shape features bulging wheelarches and creased feature lines running from front to rear. By combining these classic, British sports car design cues with state of the art battery power and innovative electric motors, the Lightning follows the path of the Tesla Roadster and has been developed with the goal of generating exhilarating performance.