That cars pollute the air and that is really bad the cause of this is cars and coal as it's fuel to fix it to get electrical cars so it won't pollute the air and is better for the environment if this keeps on one day air will be unbreathable a other solution is.
About car pollution
It's when a car lets out a smoke that pollutes the air it is one of the causes of global warming it contains green house gasses and other harmfull gasses.
Ways to prevent it.
Try driving less
Use gas more effectively