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You Installed the Correct Battery, but Your Car May Still Think the Old One Is There

Changing a car battery used to be one of the cleaner bargains in home mechanics. Remove two terminals, undo the clamp, lift out the old battery and fit the new one. The clock might need resetting a

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Highway Rumble Strips Are Designed to Sound Awful, but Making Them Quieter Could Save Lives Too

One tire wanders across the painted line and the previously quiet cabin erupts with a harsh mechanical growl. The steering wheel trembles, the seat vibrates and, for half a second, it feels as if some

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The Seatbelt That Chased You Across the Door Was America’s Cheaper Alternative to an Airbag

Open the door of certain 1980s or early 1990s cars and a small buckle begins travelling along the roofline. Sit down, close the door and the shoulder belt glides toward the B-pillar, hopefully passi

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One Rule Forced American Car Designers to Reuse the Same Headlights for Over 40 Years

Park a 1940s Jeep beside a Chevrolet sedan, an early Volkswagen Beetle and a British roadster, then look closely at their headlights. The surrounding bodies could hardly be more different. The glass c

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Automatic Shifters Once Put Reverse Beside Low. PRND Helped End the Confusion

A driver can move between unfamiliar modern cars and still understand the transmission selector within seconds. Park sits at one end, followed by Reverse, Neutral and Drive. Lower ranges, manual modes

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The First Crash-Test Dummy Had a Far More Terrifying Job Than Testing Cars

Long before a crash-test dummy sat behind the wheel of a family sedan, one was strapped into an aircraft ejection seat. Its assignment involved rocket sleds, aviation helmets and the violent forc

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That Concrete Highway Wall Has a Surprisingly Clever Way of Redirecting a Crashing Car

A concrete barrier beside a highway looks like one of the least forgiving objects a car could encounter. It is heavy, rigid and often positioned only a few feet from traffic moving at serious speed.

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Porsche’s Left-Side Ignition Has a Perfect Racing Story. The Evidence Makes It Messier

Climb into a traditional Porsche and the ignition appears on the left side of the steering wheel. Most cars place it on the right, close to the driver’s dominant hand and safely within the

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Cars Survived Nearly a Century Without Cup Holders. Then America Refused to Drive Thirsty

The automobile conquered continents, crossed deserts and survived two world wars before anyone decided it desperately needed a secure place for a paper cup. For much of automotive history, drivers

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Whitewall Tires Started as a Manufacturing Compromise. Then They Became a Status Symbol

Whitewall tires have become visual shorthand for a particular kind of motoring glamour. Put them on a long Cadillac with chrome bumpers, tailfins and enough hood to host a family picnic, and the pi

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