The goal of the article is to compare battery and hydrogen fuel cell electric cars to see which is better for helping the environment and reducing pollution caused by traditional gas cars. The researchers looked at how these two types of electric vehicles work and discussed their advantages and drawbacks. They found that electric cars are cleaner than gas cars because they don't emit harmful gases from their tailpipes, which helps fight global warming and air pollution. Both battery-powered cars and hydrogen fuel cell cars have their own unique benefits, and the researchers also predict how these technologies will be used in the future for transportation.