Dan Wheldon was killed when hit head on the fence post at Las Vegas Motor Speedway-contact who invented "a non-survivable injuries" to two times winner of the Indianapolis 500.
The cause of death came to light Thursday when IndyCar presented findings from 16 October crash in the final of the season. The crash collected 15 cars, including Wheldon, who came from the back of the initial contact, spinning cars and launched over sail around 325 feet into the catchfence.
Although contact with Wheldon, post killing investigation concluded a number of factors that contribute to what a "perfect storm."
"The accident was significant because the number of race cars are broken, but more importantly because non-survivable injuries And Wheldon," the report said. "While several factors coincide to produce a" perfect storm ", none of them can be selected as the sole cause of the accident.
"For this reason, it is impossible to determine with certainty that the results would have been different if one or more factors do not exist."