Texas Motor Speedway - Firestone Firehawk 600

Firestone Firehawk 600

The Firestone Firehawk 600, a CART race, was to be held on April 29, 2001. During practice and qualifying, however, 21 of 25 drivers complained of dizziness and disorientation during two days of practice. Drivers experienced sustained G forces over 5 Gs, more than the typical human tolerance. With their powerful turbocharged engines and superspeedway downforce packages, the Champ Cars were averaging speeds well in excess of 230 mph. Much faster than the speeds seen regularly by Sprint Cup cars, and faster still than IRL machinery of the time.

With the possibility of drivers blacking out on the track, CART cancelled the race two hours before the scheduled start.