Chevy Cobalt 05-10 Smoke Side Window Visor Shade Guard Deflector 4pc Sedan 4door on 2040-parts.com

Design your own Ghost with the new Rolls-Royce iPhone app

So you want to build your dream Rolls? Now you can. Rolls-Royce Motor Cars said its first app for the iPhone and iPod touch is now available at the App Store.

Underground Racing Lamborghini cracks 250 mph--watch the video

Earlier this year, we told you about Underground Racing, a shop in Charlotte, N.C., that makes a business out of upgrading Lamborghinis with twin turbochargers to boost engine output to more than 1,000 hp. Now, a Lamborghini Gallardo Superleggera upfitted by Underground Racing cracked the 250-mph mark at the Texas Mile event. Car owner Richard Holt made the 250.1-mph run in late March, but video was posted just this week.

2014 Camaro Z/28 boasts slick aero tricks

When the Chevy Camaro Z/28 was unveiled last spring at the New York auto show, we were told how Chevy took stuff out to lighten the car. Trunk carpet and interior sound-deadening material are jettisoned, the sound system has but one speaker, the rear glass is thinner and so on. Despite the decontenting, it turns out the Z/28 is no stripper, at least in terms of aero technology: Chevrolet says the 2014 Camaro Z/28 manages airflow “like few other production vehicles, generating downforce like a race car.” Delving into the hyperbole reveals numerous exterior modifications designed to improve not just aerodynamics, but powertrain and brake-system cooling, as well.