Smog Tests

Arguably just as important than the sales of new vehicles, e.g., hybrids and EVs, are the consequences of not buying new cars.
Dec 14, 2014   Scientific American
A new report points to the 10-15% of vehicles in California that cause half the smog caused by light duty vehicles. Rather than urban strategies such as transit or TOD, the authors support improving the vehicle retirement and replacement program.
Mar 9, 2014   Napa-Solano Times-Herald