Fontaine Fifth Wheel Hitch on 2040-parts.com

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.

Nissan's Design Future

Recently Nakamura briefed the world's press at a product seminar and displayed some teaser images of the new Infiniti concept. The design is a coupe with classical sporty proportions featuring a cabin set back over the rear-axle and a long, sporty hood. Nakamura says the concept will not directly represent a future production model, but give the flavor of the new design theme.

Fisker Karma gets EPA certification

Fisker Automotive received its U.S. Environmental Protection Agency certification this week, which means sales of the 2012 Karma sedan can begin. The Karma is a series plug-in hybrid, powered by a lithium-ion battery and a 2.0-liter range-extending gasoline engine.