If we do not get out sleepers, and forge rails, and devote days and nights to the work, but go to tinkering upon our lives to improve them, who will build railroads? and if railroads are not built, how shall we get to heaven in season? but if we stay at home and mind our business, who will want railroads? we do not ride on the railroad; it rides upon us.

what does thoreau mean when he says, "we do not ride on the railroad; it rides upon us" at the end of the passage?

question 2 options:

he is commenting on the rapid growth of the transportation system and the danger it poses to society.

he is criticizing the historical expansion of the railways and the destruction it brings to the surrounding landscape.

he is using the train as an example of how technological progress moves people further from personal freedom.

he is critiquing those who live a life marked by luxury and excessive expenses.