When Ryan Dunn got behind the wheel of his fatal drive, his blood alcohol content was nearly 2.5 times the legal limit.
At that level, drivers suffer from substantial impairment in vehicle control, attention to driving task, and visual and auditory information processing, according to MADD.
A 2008 Census Bureau study showed that alcohol was involved in one-third of all fatal car accidents.
Another factor that exacerbated the situation was likely Dunn's high speed of 130 mph. When a driver goes that fast, he already reduces the amount of time he has to react. When he's drunk and his reaction is slowed, it becomes even more dangerous.
Dunn was known among his friends for driving fast. April Magera, who treated Dunn like a son, said she often yelled at him for driving too fast.
On the fateful night of his accident, Dunn went to a bar to have some drinks with his friends. At the end of the night, right before the bar closed, some fans bought him three additional drunks. Although he didn't drink all that was given to him, it still likely pushed him over the edge.
Some remarked that Dunn didn't look intoxicated when he left the bar to drive his Porsche. What likely happened was that the fan drinks he consumed didn't hit his body yet when he left the bar. Instead, it hit when he was behind the wheel.
Dunn is survived by the love of his life, Angela M. Cuturic and his parents. He had a private memorial service on Wednesday. His public memorial service will be announced at a later date.