A huge Nascar crash involving twelve cars sent one flying upside down into the track 's fencing .
A huge Nascar crash involving twelve cars left members of the crowd injured at the end of the Sprint Cup at Daytona on Sunday .
A huge Nascar crash involving twelve cars sent one flying upside down into the track 's fencing and left members of the crowd injured at the end of the Sprint Cup at Daytona on Sunday .