How long does it usually take to get from downtown Grand Rapids to Detroit on a typical Thursday morning ?
O O O O O O O O O B-SL_SOURCE I-SL_SOURCE I-SL_SOURCE O B-SL_DESTINATION B-SL_DATE_TIME_DEPARTURE I-SL_DATE_TIME_DEPARTURE I-SL_DATE_TIME_DEPARTURE I-SL_DATE_TIME_DEPARTURE I-SL_DATE_TIME_DEPARTURE O