Animals and vehicles produce heat and are easily seen in infrared, even when it is completely black.

In two years, a total of 325 vehicles produced.

The vehicle was propelled simply by the terrific pressure of radiation thus produced.

We know that on-road vehicles produce 18 percent of carbon emissions from this city.

The new hybrid vehicles produce 40% less oxides of nitrogen, and reduce greenhouse gases by 30%.

- More than one million vehicles and two million engines produced annually.

Rover's productivity, measured as vehicles produced per worker each year, is one of the lowest in Britain.

Those are two factors that her engineers suspect would make the vehicle produce more soot particles.

When operating in actual traffic, these vehicles produce higher levels of emissions than the categories allocated to them would appear to indicate.

Most vehicles produce air pollutants that contribute to climate change.