Highways built only for cars were ruining too many habitats like forests and fields. Too many resources were used for producing cars. With time, cars have changed. Before the first Earth Day lead was an additive in gasoline. Today, all new cars run only on unleaded gasoline.
Cars run cleaner, more efficiently, producing less pollution, using less gas.
Some car manufacturers are even experimenting with recycled and re-used parts. Still, few things affect the environment quite like a car. People are now driving more cars than ever and longer distances than ever, adding to urban smog. Check out the drawing to find all the different ways a car causes pollution. Here's your job.