Court Decision – In case of semi rig’s collision and wrongful death action, held that MCS-90 endorsement attached to insurance policy of motor carrier whose trailer was being hauled by a rig driven by a third party and pulled by a third party’s tractor unit would apply in the event there was a judgment in the case (context here was motion for summary judgment), despite the facts that (1) third party was hauling the trailer at time of the accident, (2) another third party had entered into a lease subject to purchase with tractor’s owner, and (3) that third party itself had entered into an Owner Operator Lease Agreement with yet another third party with obligation to do the maintenance.