But by some measures the emissions from that tailpipe may be cleaner than the ambient air.
By choosing a Ford Focus, he also got a car with tailpipe emissions so low they are often cleaner than the ambient air in smoggy urban areas.
Argonne's testing shows that the Hydrogen 7's 12-cylinder engine actually shows emissions levels that, for certain components, are cleaner than the ambient air that comes into the car's engine".
Focusing on the content makes the conventional navigational elements less visible, and using gestural control allows the design to be cleaner, quieter and more ambient.
In "Turn Me Well", the vacuum cleaner played into the mic adds ambient sound to the mix.
We compiled two ensembles of sounds containing representative examples of vocalizations (animal calls, human speech, bird songs) and sustained ambient noises (wind, vacuum cleaner, etc).
Sounds from a variety of sources (rain, wind, waterfall, large crowd, vacuum cleaner) were concatenated to produce a 160 second ensemble of ambient noises.
Aggregate airborne emissions from many small sources spread across Greater Houston, such as dry cleaners, gas stations, surface coating processes, and gasoline-fueled lawn maintenance equipment, add to the complex mixture of ambient air pollutants typically present in Houston's air.
