If this is a mission for MP the above suggestion might not work. Instead put the deleteVehicle command in a script, put a slight pause at the top of the script before the deleteVehicle command, and then call the script from the leader unit's init field. Put the leader unit somewhere out of sight.
In the leader units init:
this exec "pausedelete.sqs"
pausedelete.sqs
~0.5
deleteVehicle _this
exit
Of course, you could also use Chris' OFP Script Editor which has a wizard to generate scripts to customise units.