Take a spin with John Flory on a glorious summer day and you'll notice a certain focus from the Yale lab supervisor. He ignores the Connecticut countryside and sprawling homes, eyes fixed on the road and his miles per gallon gauge. "Going downhill is kinda like road candy," he smiles. "Here's some free miles per gallon for you."
Flory is among the growing numbers of "hypermilers" -- drivers obsessed with tire pressure and wind drag, controlled starts and rolling stops. He does his best to time...Full Story