I will admit that math is not my suit. Somehow I made it through high school trig, but these days, ask me anything about a "tangent" or a "co-sign" and I will certainly stare blankly back at you. But even I knew the answer to this brainbuster: "How long does it take to drive 80 miles at 80 mph?" People who didn't? Chelsea. And her husband caught it on video.