Now, to the dangers on rental car dangers. The story how rental car companies had been renting vehicles that were under recall but not fixing them. Five of the rental car companies have pledged to... See More
Now, to the dangers on rental car dangers. The story how rental car companies had been renting vehicles that were under recall but not fixing them. Five of the rental car companies have pledged to stop that practice. And brian ross is here with the latest. Reporter: Good morning, amy. In a move that only seems to make common sense, enterprise, the biggest rental car company, has joined avis, hertz, thrifty and national, will support a federal law to make it impossible to rent cars without fixing them. The campaign led by the mother of these two sisters, who were killed in a car crash after their rental car had caught on fire. They had been incinerated in the car. Reporter: Rachel and sister, jackie, were heading to a family reunion in 2004, after renting a car from enterprise. You want them to drive something safe. Reporter: When they arrive, they wtold they were upgraded to a p.T. Cruiser. But they were not told that enterprise had received a recall notice from chrysler, one month earlier, in september 2004. Warning that the power steering fluid on the p.T. Cruiser could leak and result in an underhood fire. On their way back home on highway 1, the war reality, as the p.T. Cruiser caught on fire. The smoke would fill the engine compartment. You wouldn't be able to see or growth. You had no steering. Reporter: They spent years in court fighting enterprise, based in st. Louis. In pretrial testimony, enterprise executives made a surprising admission, there was no corporate policy that recalled cars be taken out of rental. Did you ever consider the possibility that enterprise should not rent cars to the public after they've received recall notices from the manufacturer? No. I had never imagined in a million years that a company could rent a car that they knew was recalled. Reporter: And now, the fight is paying off. Joined by senator charles schumer of new york, and barbara boxer of california, to get recalled cars off the road. And it was yesterday that enterprise, the biggest of all the rental car companies agreed to go along with the proposal that these cars could not be on the road until they're fixed. It's good that happened. But it's so sad a tragedy had to happen before the change was made. Reporter: For the family, it's been too long coming. I cannot believe it took that long. Now, to the chilling story out of florida, where a high school teacher has been arrested
This transcript has been automatically generated and may not be 100% accurate.