(Minnesota Soybean Research and Promotion Council/KROX) Over the course of two decades, biodiesel has proven to be nothing short of heroic in helping to clean Minnesota’s air. Starting this week, the Minnesota Soybean Research & Promotional Council (MSR&PC) is debuting a super-powered campaign that highlights the wonder of biodiesel. For the next several months, biodiesel’s carbon-reduction message will be splashed across dozens of Metro Transit buses in a comic book-themed campaign sponsored by MSR&PC. The Council has also launched a new website – mnbiodiesel.com – touting the muscle behind this homegrown fuel. Earlier this spring, the Metropolitan Council approved a measure to invest $122 million in adding 143 new biodiesel buses to the Metro Transit’s fleet. The new buses account for about 15% of the fleet. 46 buses in total will carry MSR&PC’s superhero message.