Step 1: The question asks to identify the source poem of the given line.
Step 2: The line refers to 'chariots and sedans,' which are forms of transport associated with city life, wealth, and ease.
Step 3: This line is from the poem "God Made the Country" by William Cowper. The poem contrasts the natural, virtuous life of the country with the artificial, noisy, and idle life of the town. The line describes the town dwellers who travel in comfort, knowing no fatigue, which is part of the poet's critique of the artificiality of city life.