You can also createVehicle Array, using something like
;SpawnVeh.sqs
;place an invisible H pad on your map
;& name it SpawnPoint.
;Call the script via trigger using
;[] exec "SpawnVeh.sqs"
_veh = createVehicle ["car_sedan", position SpawnPoint, [], 0, "NONE"];
exit
useful when spawning aircraft in some situations