On UK highways, there are about 12 million diesel vehicles.
More than 40% of new cars sold in the UK now are diesel, up from 13% or so a little more than ten years ago. In the UK, there are currently 12 million diesel vehicles on the road. Government incentives based on the lower carbon emissions and higher fuel economy of diesel compared to gasoline are mostly to blame for this. Diesel vehicles produce significantly more dangerous NOx than their petrol-powered counterparts.
A school district in California considered prohibiting the use of Merriam-Collegiate Webster's Dictionary.