According to Bloom's Revised Taxonomy, a first-grade student can tell about the box of crayons by remembering a poem about colors, paraphrase the poem by understanding it and apply by using the crayons to draw or write the names of the colors with the same color.
The personification in this is “But here and there a few cars groaning creep...” the idea this personification gives about New York is probably that New York is [obviously] just waking up and people are starting to drive their cars around the city.