Most of the pollution in Washington County come from vehicular emissions. (utahpubliceducation.org)
Even in Australia, pollution associated with vehicular emissions costs billions of dollars annually. (johnquiggin.com)
One of the promises of services such as Lyft and Uber (which are called ridesharing platforms but are more like dispatchers for freelance taxis) is that they will reduce the need for car ownership, and that they will bring down the total number of cars driving in cities, thereby also decreasing vehicular emissions. (treehugger.com)