Not to drag this sad occurence along, but even from Wikipedia:
"At 12:15 p.m., Smiley left the pits to start his qualifying run. On his second (of two) warm up laps, he approached turn three. The back-end of the #35 Intermedics March 81C-Cosworth became loose, and Smiley overcorrected. The front wheels suddenly gained traction, the car turned and crashed head-on into the concrete wall at about 200 mph (320 km/h). The impact of the March against the wall was so hard and so violent, that the fuel tank exploded with a large fireflash, the car broke into three large sections, and the rest disintegrated into hundreds of pieces. Most of the shattered car went airborne for at least 50 feet (15 m), littering the track with debris. Smiley's exposed body tumbled with the wreck hundreds of feet through the short-chute connecting turns three and four. Pieces of the car were strewn all over the track."
