Had it not been for the car being towed and Cindy losing it and calling the po-po...
I think that George, Cindy, Casey, and Lee would have gotten their stories together and then reported a kidnapping or carjacking.....maybe at Walmart, or Publix, or wherever...
The police would interview friends and family. Friends would say that they haven't seen Casey since whatever date. Family would say that when Casey was out partying it up, Caylee was home safe and sound with them. Until she was taken from them by some shadowy figure at wherever.
Had Cindy not called 911 on July 15...this would be in the news, but we'd all be feeling very sorry for Casey, the poor mother whose child was abducted by some stranger at Publix or the park, or carjacked.