(CNSNews.com) – First lady Michelle Obama joked about the explosion of a solar-powered car when encouraging graduates of Oregon State University to persevere through life’s challenges. One of the examples she gave was of a student who faced severe burns when the $100,000 solar-powered car he helped build exploded and left him with severe burns. “But when he took it out for a test drive last summer, it caught fire and exploded, and Nicolas sustained second- and third-degree burns on his arm, face and leg. But instead of throwing in the towel, within a month, the team was back at...