Hurricanes left millions rebuilding from Texas to Florida. But the storm's impact could soon be felt well outside the damage zones. Half a million cars were flooded in Houston. Hundreds of thousands more faced the same fate in Florida. According to the vehicle history report company CARFAX, hundreds of thousands of flood cars are headed back onto our nation's roads. They will be cleaned up and sold to unsuspecting customers, placing those drivers and their loved ones in danger.