[drivemusicnow]

I feel if you make a law, you should enforce it... So in that way, this is at least a halfway decent training video.

On the other hand, the fact that so much is blamed on automotive gasses, when it causes less than 5% (don't remember how low of a number it was when I researched it, however I know it was under 5) of all air pollution is rather rediculous. Also the extent to which california prosecutes these offenses, and the limit they place on modification of personal property is rather rediculous. I say unless they can prove that it somehow makes other people less safe, or that it emits a significant value of harmful gasses over the standard.