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One Lap of the Web: DeLorean engine swaps, 2013 Women's World Car of the Year and the best French cars

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. -- We've driven the new BMW 4-series and found it worthy of being the 3-series coupe's successor.

Kumho Tire launches free multicar racing app

Kumho Tire USA is launching “Kumho Tire Drive”--a free multicar racing game application for car enthusiasts who use Apple products. “Kumho Tire Drive” lets the gamer race a supercar equipped with Kumho tires on curvy city streets, a famous proving ground in Germany and other tracks around the world. The garage feature allows racers to use their accumulated points to upgrade from an entry-level import tuner to a classic muscle car or an exotic dream car.

Expert: Fisker Karma's engine packaging, not batteries, likely caused fire

A garage fire last week in suburban Houston has been linked to a Fisker Karma plug-in hybrid, but the company quickly noted that the battery remained intact and unplugged -- and did not appear to be the cause. But if not the battery, then what? More likely, poor packaging in the engine compartment and exhaust routing generated excess heat.