VW diesel scam bugs drivers
Boston Herald - 09/24/2015
One expert said years of cars running with ineffective emissions controls is enough to make an environmental impact. The Environmental Protection Agency estimates the cars emitted up to 40 times the legal pollution limit.
“The impact is we had more pollutants from those cars emitting all the time,” said Yiannis Levendis, an engineering professor at Northeastern University who focuses on diesel emissions. “The impact was sizable.”