Detroit has been at the center of the country’s auto industry ever since Henry Ford rolled his first Model T off the assembly line in 1908. But as hard times have fallen on America’s Rust Belt, there's a new region hoping to give Detroit a run for its money. Amidst start-up companies like Google, eBay and Facebook, clean tech entrepreneurs in Silicon Valley are plugging into an emerging electric car industry. Andrea Kissack tells us more.