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Bystanders tend to a man who was struck by a vehicle on Red River Street in downtown Austin, Texas, on Wednesday March 12, 2014. Police say two people were confirmed dead at the scene after a car drove through temporary barricades set up for the South By Southwest festival and struck a crowd of pedestrians. (AP Photo/Austin American-Statesman, Jay Janner) ( South By Southwest Fatal Crash )

A bystander and a police officer tend to a man who was struck by a vehicle on Red River Street in downtown Austin, Texas, at SXSW on Wednesday March 12, 2014. (AP Photo/Austin American-Statesman, Jay Janner) ( South By Southwest Fatal Crash )

Bystanders and paramedics tend to a person who was struck by a vehicle on Red River Street in downtown Austin, Texas, at SXSW on Wednesday, March 12, 2014. (AP Photo/Austin American-Statesman, Jay Janner) ( APTOPIX South By Southwest Fatal Crash )

Paramedics transport a person who was struck by a car on Red River Street in downtown Austin, Texas, at SXSW on Wednesday March 12, 2014. (AP Photo/Austin American-Statesman, Jay Janner) ( South By Southwest Fatal Crash )

A man is transported to an ambulance after being struck by a vehicle on Red River Street in downtown Austin, Texas, on Wednesday March 12, 2014. (AP Photo/Austin American-Statesman, Jay Janner) ( South By Southwest Fatal Crash )

Bystanders and a police officers move a person who was struck by a car on Red River Street in downtown Austin, Texas, at SXSW on Wednesday March 12, 2014. (AP Photo/Austin American-Statesman, Jay Janner) ( South By Southwest Fatal Crash )

People carry a person who was struck by a car on Red River Street in downtown Austin, Texas, on Wednesday, March 12, 2014. (AP Photo/Austin American-Statesman, Jay Janner) ( South By Southwest Fatal Crash )

A man checks the condition of a man in the street after he was struck by a vehicle on Red River Street in downtown Austin, Texas, during SXSW on Wednesday March 12, 2014. (AP Photo/Austin American-Statesman, Jay Janner) ( South By Southwest Fatal Crash )

People tend to those who were struck by a vehicle on Red River Street in downtown Austin, Texas, during SXSW on Wednesday March 12, 2014. (AP Photo/Austin American-Statesman, Jay Janner) ( South By Southwest Fatal Crash )

Bystanders and a paramedics tend to people who were struck by a vehicle on Red River Street in downtown Austin, Texas, at SXSW on Wednesday March 12, 2014. (AP Photo/Austin American-Statesman, Jay Janner) ( South By Southwest Fatal Crash )

People carry a person who was struck by a car on Red River Street in downtown Austin, Texas, at SXSW on Wednesday March 12, 2014. (AP Photo/Austin American-Statesman, Jay Janner) ( South By Southwest Fatal Crash )

Unidentified people are comforted after being struck by a vehicle on Red River Street in downtown Austin, Texas, during SXSW on Wednesday March 12, 2014. (AP Photo/Austin American-Statesman, Jay Janner) ( South By Southwest Fatal Crash )

People are treated after being struck by a vehicle on Red River Street in downtown Austin, Texas, on Wednesday March 12, 2014. (AP Photo/Austin American-Statesman, Jay Janner) ( APTOPIX South By Southwest Fatal Crash )

People perform CPR on a woman after she was struck by a vehicle on Red River Street in downtown Austin, Texas, at SXSW on Wednesday March 12, 2014. (AP Photo/Austin American-Statesman, Jay Janner) ( South By Southwest Fatal Crash )

The crowd scatters seconds after several pedestrians were struck by a vehicle on Red River Street in downtown Austin, Texas, during SXSW on Wednesday March 12, 2014. (AP Photo/Austin American-Statesman, Jay Janner) ( South By Southwest Fatal Crash )

A patient is carried away after being struck by a vehicle on Red River Street in downtown Austin, Texas, during SXSW on Wednesday March 12, 2014. (AP Photo/Austin American-Statesman, Jay Janner) ( South By Southwest Fatal Crash )

People walk away after the accident on Red River Street in downtown Austin, Texas, that left two dead at SXSW on Wednesday March 12, 2014. (AP Photo/Austin American-Statesman, Jay Janner) ( South By Southwest Fatal Crash )

A man helps another man who was struck by a vehicle on Red River Street in downtown Austin, Texas, at SXSW on Wednesday March 12, 2014. (AP Photo/Austin American-Statesman, Jay Janner) ( South By Southwest Fatal Crash )

A man is transported to an ambulance after being struck by a vehicle on Red River Street in downtown Austin, Texas, during SXSW on Wednesday March 12, 2014. (AP Photo/Austin American-Statesman, Jay Janner) ( South By Southwest Fatal Crash )