ray petro built this indoor mountain bike park in cleveland, ohio. now it's a mecca for mountain bikers around the world. when he first had the idea, nobody thought it would work. >> it's like a mountain bike miracle. like field of dreams type thing. there was no business plan, there was no business model. it was just blind stupidity, luck, passion. >> we met people who bet it all. kim benson was a part-time waitress with a mortgage, four kids and a husband who was unable to work because of an injury. she gathered all their savings and launched kim's low-fat bagels. >> it's a lot. but you know what, three years ago, we couldn't afford heating oil for our home and today we not only -- the business end provides for us and for eight other families. it's huge. >> we went to silicon valley to talk to the founders of twitter and pinterest. we learned from ceos of companies like washrby parker a others. >> i'm here in las vegas at the consumer electronics show. >> we kept up with the newest innovations at ces in las vegas and south by southwest in austin. a