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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.

Brazilian students develop soapbox racers for Volkswagen

Brazilian design students have competed for year-long internships at Volkswagen's Brazilian design studio by designing – and racing – soapbox cars. Established 15 years ago by Volkswagen South America design director Luiz Veiga, the Volkswagen Design Talent Contest refreshed its format for 2013 by challenging students to develop a prototype for a gravity-powered soapbox racer instead of asking for sketch and render-based proposals. According to Veiga, Volkswagen was looking for someone "capable of working away from the desk and able to create design solutions, assess and build them".

Caterham AeroSeven Concept unveiled in Singapore

Well this is sure to divide opinion. What you're looking at here is the Caterham AeroSeven Concept - the first glimpse of the new road-going Caterham, due to arrive in autumn 2014. It was unveiled in Singapore ahead of this weekend's F1 Grand Prix, and it's already generating quite a buzz in social media circles.