7 fans injured at Talladega Superspeedway

[the noise factor]

Seven fans sustained minor injuries after being struck by flying debris when Carl Edwards’ car went airborne into the safety fence on the final lap of the Aaron’s 499 at Talladega Superspeedway on Sunday.

Is it safe to be at a NASCAR race? How can Nascar make it more safe for fans?

Can't say I know since I've never been to a race, but I'd think steps should be taken to avoid this from ever happening again...