Vehicle locations are randomized per session, meaning the possible locations are pre-determined each time the player is first to join a new session. There are 100 possible locations across the map, chosen randomly from 2 sets of 50 different locations.
Every player in the session has the same set of spawn locations, but will only be marked on the map if another player comes within range of the export, or if they come across the vehicle themselves.
Exotic Exports are marked on the map as a blue Exotic Exports Vehicle Random Event dot.