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Volvo Flywheel KERS Hybrid cuts fuel consumption by 25%

Two years ago we reported that Volvo were testing a clever hybrid Flywheel KERS system for road cars and hoped it would prove to be a good way to make road cars more economical. And it seems it does. The Hybrid Flywheel KERS system Volvo has developed weighs only 6kg, has a diameter of just 20cm, is made of carbon fibre, sits in a vacuum and is located on the back axle and works by recovering energy under braking which is then stored for use when the car moves off.

First Z/28 crushes new Mustang at Barrett-Jackson auction

The Scottsdale auctions are full of high-rollers making high-profile bids on classic and modern cars. As such, there was a ton of buzz circling the first retail 2015 Mustang and what it would ultimately sell for -- it ended up crossing the block at $350,000. But it was the first retail 2014 Chevrolet Camaro Z/28 that proved to be the dark horse at Barrett-Jackson.

One Lap of the Web: A Miata ninja, classic race cars and the world's most vintage-car-friendly city

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. -- If you (or your children) love the smartphone and tablet app Fruit Ninja, you will get a kick out of Motor Authority's photo gallery from the Donington Historic Festival.