The article compares hydrogen, gasoline, and electric cars worldwide to see which is best for the environment. It talks about the importance of moving away from using non-renewable fuels in vehicles to protect our planet. Scientists are researching new technologies like hydrogen fuel cell cars and electric cars to help make a change. The study considers factors like how the cars get their fuel, how far they can drive, and if people like them. They are trying to understand the future of transportation and the current situation. The research shows that hydrogen and electric cars are promising alternatives to regular gasoline cars, but there is still more to learn and improve in these new technologies.