A Robotic Exoskeleton, Electric Cars, the PlayBook, and More

In this week’s World Tech Update, RIM unveils the BlackBerry PlayBook tablet computer, Apple’s iPhone 4 launches in China, electric cars debut at the Paris Auto Show, Sony Ericsson’s LiveView is a mini display for Android phones, and Raytheon revamps its Exoskeleton robotic suit to give users superhuman strength.