I work with the local Orlando media, I am no longer a member of the working press, but I do work with them. There are many reasons why this may not have made the news. Locally, the Casey Anthony case has been the show stealer in local news lately, so maybe it just isn't what the local news is looking for right now.
Also, when the media shows up at Disney to something similar as stated they are usually asked to leave, in a very nice way (honestly, Disney Security is really nice when they ask media to leave) as Disney is private property. Some local stations are known to take handi cams into/or around the area and get video of "the scene" and then make a big deal when they are asked to leave the property.
Is Disney trying to cover anything up? No. If a traffic report was filed, it's public record, you just have to know specific details to find the specific report. Florida has the "Sunshine Law" meaning everything is in the open, so traffic citations written by Orange County Sheriff's Dept and/or Reedy Creek Fire Rescue are technically public record. If 911 was called, anyone can call and ask for a recording from the responding agency that handled the call.
Now, once at the hospital, federal law prohibits information to be released with out the patients consent, so that's a whole different ball game and Disney has nothing to do with that. It's call the HIPAA act.
It all depends on the day and what else is going on in the media, and like I said earlier, other things have dominated the news lately.
There, you have it from someone who got out of the business (kinda) because of reasons already stated by others... I saw the light and got out!