![Mechanical engineering student Sam Walker and his solar trailer.](http://blogs.oregonstate.edu/engineering/files/2014/04/sam-walker-solar-trailer-300x225.jpg)
When Sam Walker wanted to build a solar trailer for his senior design project, his professors balked. Most projects were either industry sponsored or based on faculty research, not on the design whims of a student.
But Walker stuck with his vision to build a mobile station that could supply power using solar energy — and luckily so. After writing a formal proposal and raising thousands of dollars, his professors agreed to let him design, build, and present the trailer at the annual Engineering Expo. Continue reading