Was driving around Indianapolis Saturday morning on I465, On the southeast corner We saw a 2nd Gen Dually with the cab on Fire. I mean Big fire. Flames were pouring out both windows, There was a large hole in windshield near where the mirror should hang, Fire & Smoke everywhere. Driver was standing 150 feet away, talking on the phone. My brother in law drove by about an hour later, said you could not even tell what color it was. Tires & Fenders were burned off, nothing left of the cab except the steel parts. It kinda makes ya nervous to see things like that, when the vehicle looks just like what you drive. So, beside the obvious "I fell asleep & dropped a lit cigarette" theory, what might have caused this? anybody ever have anything get hot under the dash? Just a wondering. P.