mo ‧ tor ‧ cade /ˈməʊtəkeɪd $ ˈmoʊtər-/ BrE AmE noun [countable]
[ Date: 1900-2000 ; Origin: motor + -cade (as in cavalcade) ]
a line of official cars, including a car carrying an important person, that is travelling somewhere:
the President’s motorcade