Dave Clegern, California Air Resources Board (CARB) spokesperson, talked to Lou Ann Hammond, CEO, Driving the Nation today.

CARB has been regulating diesel since 1996 and Volkswagen was only allowed to bring its cars into California if they met those standards. Why do those standards matter so much? What effect does NOX have on the health of Californians?

The EPA has the right to fine Volkswagen, but will CARB also fine them?