More than two dozen NASCAR fans got hurt after chunks of debris, including a tire, sailed into the grandstands when Kyle Larson’s car flew into the fence on the last lap of the Nationwide Series race at Daytona.

At least 28 fans were injured, four were fastened to backboards, and six were described as seriously injured.

Nascar has already started an investigation into the crash and says they will continue to look for ways to improve safety.

Good news from Daytona Beach: The two worst-hurt fans in Saturday's major Nascar crash have been upgraded from critical to stable condition.

One of them is an adult and the other a child. On Saturday, the child's injuries were considered life-threatening.

The only hospitalized driver, Michael Annett, was released, and three other drivers were treated and released.

At least 46 race fans died at US tracks between 1990 and 2010.