1984 Michigan 500
In the 1984 Michigan 500, Ganassi cut a tire and got into Al Unser Jr. on the backstretch. They drifted into the infield. Unser hit the inside guardrail nose-first, while Ganassi's car got airborne and slammed top-first into the guardrail with Ganassi's head hitting the rail. Ganassi's car disentigrated in midair. Ganassi suffered smoke inhalation, a concussion, a broken sternum and collarbone and many contusions. This effectively ended Ganassi's driving career.
Read more about this topic: Chip Ganassi