- Texas man had surgery after suffering leg gash but is "doing fine," brother says
- The multicar crash happens at the end of a Nationwide Series race in Daytona speedway
- Debris, including an engine, ends up airborne -- some reaching the stands' second level
- 12 patients are at one hospital, two of them in critical but stable condition, official says
Debris flew into the stands, injuring a number of spectators -- at least two of them critically -- during a jaw-dropping crash Saturday in the final turn of a NASCAR race at Daytona International Speedway.
The multicar crash occurred near the end of the Nationwide Series Drive4COPD 300 race at the same Florida track where Sunday's Daytona 500 will be held.
The race had recently restarted after another wreck, after which driver Michael Annett was hospitalized for bruising to his chest, according to Richard Petty Motorsports.
Several closely-packed cars were jostling for position at top speed when they got tangled up, setting off a dangerous chain reaction that ensnared a number of vehicles.
Reigning Sprint Cup champ Brad Keselowski -- who later told CNN he and others were simply "going for the win" -- was among those involved, while Tony Stewart somehow emerged unscathed an