Dubois County Herald By MIKE MORRIS Herald Staff Writer Water helps his fuel gauge As fuel prices climb, everything from natural gas to switchgrass has been mentioned as a potential power source for vehicles. But several local handymen aren't waiting on those changes - they're using water to boost fuel economy. If it sounds like a grade-school science fair project, that's fine with Jason Martin, who first extracted hydrogen gas from water in science class at Jasper High School. After all, it works. "It's going to be mainstream if it's not already," the Ferdinand resident said. "It's going to be...