SUV catches fire on I-75

So I'm driving back up to Gainesville this afternoon and after only being on the interstate for a few minutes, I see smoke rising in the distance. Traffic in front of me is starting to slow down. Finally I see the source of the smoke: an SUV is on fire. I hear sirens and pull off into the emergency lane as a highway patrol car passes me and then blocks off traffic. Seeing I wasn't going anywhere for a while, I grabbed my camera, got out of the car, and began snapping away. Here are a couple of the photos from today. And this is the story of what happened to the SUV...