They're nice inside, like commuter trains. In Europe and Japan, some special trains have been built to carry people much faster than other trains can go. The MagLev is a new type of train. Powerful magnets on the track and on the bottom of the train keep the train floating about four inches over the track. It doesn't touch the track at all when it's running.
MagLev trains can go over three hundred miles an hour.
Many people want to build fast trains like this in the United States, too.