I got an email from a friend with this message.. So I think it's good to share with the rest on the important info..
According to research done by a University of California, the car dashboard, seats, air freshener will emit Benzene, a cancer-causing toxin (carcinogen) . In addition to causing cancer, it poisons your bones, causes, anemia, and reduces white blood cells.
Prolonged exposure will cause Leukemia, increasing the risk of cancer. It may also cause miscarriage. Acceptable Benzene level indoors is 50 mg per sq. ft. A car parked indoors with the windows closed will contain 400-800 mg of Benzene. If parked outdoors under the sun at a temperature above 60 degrees F, the Benzene level goes up to 2,000-4,000 mg, 40 times the acceptable level. The people inside the car will inevitably inhale an excessive amount of toxins.
It is recommended that you open the windows and doors to give time for the interior to air out before you enter. Benzene is a toxin that affects your kidney and liver, and is difficult for your body to expel.