I do not know the fine details of what exactly went on, but these two guys in a modified Eclipse and a video camera seem to be driving around, and encountered this "Smurf blue" E46 M3...the Eclipse gets a jump on the M3 at the light and is goin' through the gears, when all of a sudden...BOOM! the engine explodes! They captured it in two videos...
Video #1
Video #2