If you're obsessed with luxury and performance cars (and if you're reading this, you are) how could you turn down the chance to have all of the best cars in the world in your pocket, just a finger swipe away? Well you can have exactly that, with Motor Authority's iPhone app--and it's just been updated to bring you all the reviews, news, and photos quicker and slicker than before.

The app is available for free at the iTunes store, or you can download it directly to your iPhone/iPod Touch through the App Store.