ɐ ɹᵻkˈɜːɹɪŋ moʊtˈiːf ɪn kɹˈuːz wˈɜːk ɪz tɹænspoːɹtˈeɪʃən, sˈiːn ɪn bˈʊks fɹˈeɪt tɹˈeɪn nˈaɪntiːnhˈʌndɹɪd sˈɛvənti ˈeɪt, tɹˈʌk nˈaɪntiːnhˈʌndɹɪd ˈeɪɾi, hˈɑːɹbɚ nˈaɪntiːnhˈʌndɹɪd ˈeɪɾi tˈuː, skˈuːl bˈʌs nˈaɪntiːnhˈʌndɹɪd ˈeɪɾi fˈoːɹ, ænd flˈaɪɪŋ nˈaɪntiːnhˈʌndɹɪd ˈeɪɾi sˈɪks.
A recurring motif in Crews' work is transportation, seen in books Freight Train (1978), Truck (1980), Harbor (1982), School Bus (1984), and Flying (1986).