Traveling through train is comfortable but I think there are lots of other road vehicles which are more faster than train but we are taking about cost so yes Traveling through train is less expensive than other vehicles.
Unfortunately there is only two or three cities in our country where there is an opportunity to go through train if this system is made possible for every city in each country then every country will have less expensive and comfortable transportation.
our country also currently has a massive railway infrastructure development because the train is still the prima donna for the transportation of people and goods, especially in the capital which is very dense with productive workers, in addition to the construction of railway infrastructure, there are also many toll road developments to shorten the buses and trucks shipping goods that often pass by, with more and more infrastructure development, each region will be connected so that the circulation of money between regions is getting faster.