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Car making mysterious noises? There's an app for that

You may pride yourself on your ability to diagnose a developing engine problem by sound alone, and then replicate said mystery sound, Click-and-Clack-style, to amuse/annoy your friends and coworkers. ClingClanger is a new phone app that's designed for the rest of the world -- those who can't identify piston slap by sound and are startled by the clicking caused by a dying battery. The natural impulse is to simply crank up the radio and hope the noise/problem goes away.

Nissan expects 20,000 initial orders for Leaf EV

Nissan North America will begin taking sales orders for its new Nissan Leaf electric vehicle next spring and expects to have 20,000 of them pre-sold by the time the model reaches U.S. showrooms in the third quarter. “We are confident we will have 20,000 reservations for the Leaf by the time it goes on sale,” Carlos Tavares, Nissan's chairman for the Americas, said Tuesday.

Connectivity and customization for the 2012 Chevrolet Silverado

Heated and cooled seats, a special White Diamond Edition paint job and a new navigation system are among the upgrades for the 2012 Chevrolet Silverado. Both heavy-duty and light-duty versions also get the option of a Wi-Fi system, installed by the dealer, and new front-end designs. For 2012, the pickup will have a chrome mesh grille with a chrome surround on LS and LT models, while LTZ grilles will have body-color surrounds.