The guys behind Seattle's Propel Biofuels have a blog to provide the most accurate, up to date and practical information to biodiesel drivers. With information about blending biodiesel for cold winter driving, the relative cost of biodiesel vs. its petrol equivalent (they're currently selling biodiesel for $3.01 vs. $3.13 for petrodiesel in Seattle) and more, we think their position as retailers and alt-fuel enthusiasts gives them a good perspective on the burgeoning biofuel industry. [Awake at the Wheel]
