What is the main purpose of people asking cars and other means of transportation to give up traditional energy sources and use new energy sources

There are a lot of traditional energy is mainly gasoline and diesel, are extracted from oil, and oil resources are non-renewable or in the birth of a slow, will one day run out of resources, resource constraints on the one hand. Second is the impact of traditional energy on the environment mining is an emission is mainly carbon monoxide, hydrocarbons, nitrogen oxides are harmful gases will damage our environment. New energy vehicles are mainly electric energy, hydrogen, and so on