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Porsche 918 Spyder hits the Nurburgring (video)

The Porsche 918 Spyder – Porsche’s hybrid replacement for the Carrera GT – has been caught on video at the Nurburgring. Incredibly, it’s more that two years since Porsche took the wraps of the 918 Spyder at the 2010 Geneva Motor Show, yet we’re still more than a year away from actually seeing production cars. But Porsche are putting their time to good use. Porsche has made a few cosmetic tweaks already from the original 918 Concept, but they’ve also let it be known that the 918 Spyder will get a 550bhp 4.6 litre V8 to go with its electric motors on the front wheels  (one less motor than originally envisaged – there was going to be one one the back axle too), which will make the 918 Spyder a FWD Porsche when in EV mode.

Smart Fourjoy concept revealed ahead of Frankfurt motor show

Smart will preview its upcoming second-generation Forfour at next week's Frankfurt motor show when it shows the Fourjoy, the latest concept from the Mercedes-Benz owned city car brand. Pictured here for the first time, the new four-seater follows the earlier Forus and Forstars concepts, providing clues to next year's Forfour, developed with Renault. The French automaker will offer its own version of the new car as a replacement for the Twingo.

One Lap of the Web: Model S carbon footprints, 911 road trips and the Rover 3500

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. -- It's Tesla Model S owner vs.