Patrick Kennedy's cause is a daunting one: winning over truck-loving locals to the car-free lifestyle, and hoping those building this city proceed with an eye on livability. And yet, something about the 31-year-old blogger and design consultant recalls a guy voted "Most Likely To Succeed" back in high school. Well-spoken, opinionated and lively, his blog posts sometimes take on the look of academic white papers. Like plenty of other successful bloggers before him, Kennedy's audience has snowballed as a series of profiles and guest-columnist invitations have put his ideas about the future of Dallas in front of more influential and less sympathetic readers. Melding urban planning theory with minutiae of Dallas history, Kennedy's ideas for promoting walkability and sustainability—at the expense of those who'd build more highways—start to make a lot of sense. Then again, he may just have us distracted with all the big words.