I think Electric trains are best because there’s no such thing as traffic on a railway line and these don’t cause as much pollution as cars and are also faster than them most of the time, they also catch amazing scenery.
Almost all transport causes some sort of harm to the planet. I use a bus to get to school which burns fossil fuels, and a car to go almost everywhere else.
Long distance travel shouldn’t be restricted. Because instead of 100 people getting in their own car or private jet, they all get in one plane or train or even but this saves fossil fuels and less pollution to the planet.
People would go crazy if people couldn’t travel. It would be like going backwards in years to me and we would all be back on a camel, horse or our feet though this would be better for our bodies and we would get more exercise.