He calls the days of entrepreneurial hardship his "blood, sweat and ramen days" because all you can afford to eat on a start-up founder's clock is a quick bowl of ramen noodles. His first start-up declared bankruptcy and the second one ended in betrayal at the hands of his co-founder. After years of trying, failing and trying again, he was struck with the idea for Uber on a cold Paris night. This idea would grow into the world's most valuable start-up. Join us on today's episode of 'Startup Wednesday' to watch Uber's co-founder and serial entrepreneur, Travis Kalanick, recount his story.