Firstly, if cars get limited then greenhouse gas effect will go down that means less pollution and to destroy the ozone layer which means a lot of pollution needs to disappear if we don't want the hole in the ozone layer to get bigger then it already is which means more UV light is coming in from the sun because our protection is slowly being eaten away from all this pollution that means we can get burned more easily from the sun and eventually the world can catch fire more easily when even more UV gets in that is why a lot more forests are getting burned it's because all of this dry weather doesn't mix well with a lot of UV light coming in and also all forests can destroyed and not come back and the animals will go extinct.