Highly suspicious package

The highly suspicious package is a quest item

Gameplay
The package needs to be delivered to Motor-Runner in Vault 3 and can be received during the quest Aba Daba Honeymoon. If the Courier fails the quest, this item cannot be removed from their inventory.

Location
In Diane's possession at the Red Rock drug lab and given to the Courier after becoming a drug runner for the Great Khans.

Related quest

 * Aba Daba Honeymoon