1) Autocade 2) Convoy 3) Escort 4) March 5) Procession 1) Celebrity escort 2) Parade of a kind 3) Parade of cars 4) Presidential escort 5) Procession 6) Procession of a kind 7) Procession of cars 8) Procession on wheels 
A motorcade, or autocade, is a procession of vehicles. The term motorcade was coined by Lyle Abbot (in 1912 or 1913 when he was automobile editor of the Arizona Republican), and is formed after cavalcade on the false notion that `-cade` was a suffix meaning `procession`. In fact, there is no such suffix in either French or Latin, although -cad...
[Noun] A line of cars moving slowly, usually carrying important people.
[n] - a procession of people traveling in motor cars
noun a procession of people traveling in motor cars