Blake Mycoskie's company, Drivers Ed Direct, was launched just one year ago, but it's already given green-tinged driving lessons to nearly 10,000 teens, and taken a number of them out on the streets in hybrids to practice their starts and stops. In answering reader questions, Mycoskie, this week's InterActivist, chats about how to get better gas mileage, what he sees as the future of eco-fuels, why he gives away shoes, whether he's single, and more.