11.   The administration is also talking about limited tax breaks to reduce automobile emissions and pay for child care for working families.

12.   Until now, much of the effort to cut automobile emissions, particularly in California, has centered on fully electric vehicles.

13.   Which brings us to automobile emissions tests.

14.   High temperatures, bright sun, automobile emissions, and an almost complete absence of wind are responsible for the smog.

15.   The main causes are automobile emissions and construction projects.

16.   The state of California has been tightening regulations on automobile emissions.