So far this year, 15 children have died in the U.S. after they were accidentally left behind in hot cars. Florida has had four of those deaths, more than any other state.
"We're at a high point for this time of year as far as how many deaths have happened," said Amber Rollins, director of KidsandCars.org, a national advocacy group focused on preventing non-traffic fatalities. "It has so far been a very bad year."
According to Rollins, 2010 was the worst year, with a total of 49 children who died from heatstroke inside vehicles.