Arias Pistons 12.5:1 Compression 82mm Bore Honda B-series 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.

Bondholders snub GM, bankruptcy filing likely

Nowhere near enough General Motors bondholders agreed to exchange their debt for stock before a midnight Tuesday deadline, making a bankruptcy filing by the automaker highly likely. GM had set a threshold of 90 percent of the $27 billion in bond debt it wanted to exchange for 10 percent of the stock in a reorganized company for the deal to take place. In a statement Wednesday, GM said the amount of notes tendered was substantially less than the 90 percent target.

[Updated] Apple CarPlay set for Geneva debut

Apple is set to launch its integrated in-car iOS CarPlay at this week's Geneva motor show, partnering with Volvo, Ferrari and Mercedes. For the first time CarPlay Apple's iOS will linked directly to the car's built-in screen, with mirrored functions simplified for use while driving. Many functions are controlled by Apple's Siri voice command softwarre although if the car is fitted with a touchscreen and/or other control interfaces these can also be used.These will control major functions such as music, phone calls, iMessages and the controversial Apple Maps for navigation.