I say bogus
If your dashboard is made of, say, ABS, then it can emit benzene. Maybe it can emit ABS molecules which may also be unhealthy. A lot of D2 plastic parts are made of ABS+PA mix, like bumpers, etc. Not sure about interior trim.
More reading definitely needed.
http://www.thenakedscientists.com/fo...?topic=37634.0
Better stop filling up Marcin, its in the petrol