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You can sign us up for this one. Volvo is testing a prototype S60 sedan equipped with a Formula One-type Kinetic Energy Recovery System (KERS) at its Sweden headquarters and recently took some folks from Green Car Reports for a test drive.

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Volvo has been experimenting with flywheel propulsion systems since the eighties, but only recently has technology caught up with the possibility of real-world applications. In 2011, the Swedish carmaker was granted 6.57 million Swedish kronor (about $1M US) by the Swedish Energy Agency to work on a kinetic energy recovery system with Swedish bearing company SKF. Before it began trials, Volvo expected the fuel savings to be as high as 20 percent. After trials conducted last year on public roads

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We happen to like the Toyota GT86 – and, it of course goes without saying that the same applies to the Subaru BRZ and Scion FR-S, as well – just the way it is. Yes, that includes the standard 2.0-liter four-cylinder boxer engine and its 200 horsepower at 7,000 rpm.

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Race cars are going hybrid these days. Formula One racers store regenerated brake energy. Porsche packs a flywheel into the 911 GT3 R. Just the other day, Toyota unveiled its new TS030 Hybrid endurance prototype. And now even Jim Glickenhaus' one-off Ferrari-powered, Pininfarina-designed P4/5 Competizione is said to be getting a hybrid powertrain.

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Race cars are going hybrid these days. Formula One racers store regenerated brake energy. Porsche packs a flywheel into the 911 GT3 R. Just the other day, Toyota unveiled its new TS030 Hybrid endurance prototype. And now even Jim Glickenhaus' one-off Ferrari-powered, Pininfarina-designed P4/5 Competizione is said to be getting a hybrid powertrain.

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If you were impressed by the MP4-12C, well, you should be. It's an otherworldly performance machine. But we ain't seen nothing yet from McLaren Automotive, which is gearing up to launch an even more capable supercar.

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Glancing down the F1 roster this year has lead to a little confusion for many. That's because there are two teams that lay claim to the Lotus name, and they're both powered by Renault. The French automaker and engine supplier is stuck in the middle of the naming-rights tug-of-war, but if you were hoping things might be clarified for next season, don't hold your breath. Because while the real Lotus continues its partnership with Renault over one team (the one in the black and gold in the middle o

Volvo KERS system – Click above to watch video after the jump

KERS is coming back for the 2011 Formula One season, and Red Bull Racing's Mark Webber got together with the team's animation gurus to explain how it works.

Ferrari 599 HY-KERS – Click above for high-res image gallery

The McLaren Formula One team has joined Ferrari, Renault and Williams in backing the return of kinetic energy recovery systems (KERS) to the series in 2011. A handful of teams experimented with these hybrid drive systems in 2009 but everyone abandoned the systems for 2010. McLaren was actually the only team to win a race with a KERS-equipped car in 2009.

BMW Sauber F1.09 – Click above for high-res image gallery

Ferrari HY-KERS – Click above to watch the video after the jump

What's the world coming to when two of Italy's most storied supercar manufacturers – we're talking Ferrari and Lamborghini here, in case you couldn't tell – are planning to launch hybrid automobiles? Well, actually that'd be three of Italy's most storied automakers, now that rumors of just such a Maserati are making the rounds on the Interwebs.

What's the world coming to when two of Italy's most storied supercar manufacturers – we're talking Ferrari and Lamborghini here, in case you couldn't tell – are planning to launch hybrid automobiles? Well, actually that'd be three of Italy's most storied automakers, now that rumors of just such a Maserati are making the rounds on the Interwebs.

Porsche 911 GT3 R Hybrid – Click above for high-res image gallery

Porsche 911 GT3 R Hybrid – Click above for high-res image gallery

The hybrid drive development unit of the Williams Formula One team has decided to stop working on its Kinetic Energy Recovery System (KERS) for the team. Instead, the Williams Hybrid Power (WHP) division will target the flywheel electric KERS at road going applications. In spite of ending the system's motorsports development, WHP has actually doubled the size of its staff as it has adjusted.