If we banned motorized cars worldwide, it would bring about a lot of changes. Some of them would be positive, like helping the environment by reducing the harm caused by cars. We might even go back to using animal power for transportation, which is more eco-friendly. But there would also be some downsides. Our ability to do certain activities might be affected, and travel times could increase since we wouldn't have the speed of motorized vehicles. It's definitely a trade-off to consider.