Stored Vehicle Delivery can be called from the Cellphone to deliver any land vehicle stored in the Garage.
In Saints Row 2, Stored Vehicle Delivery is unlocked through the Escort activity in the Red Light District. In addition to land vehicles, boats can be retrieved while The Protagonist is in or close to water.
In Saints Row: The Third, the Vehicle Delivery homie is a purchasable Upgrade. Boats and aircraft are not retrievable.
In Saints Row IV, the Vehicle Delivery homie is unlocked after The Fundamentals, and can teleport all vehicles, except for boats.
In Saints Row IV, after having a vehicle delivered, a random duplicate of the same vehicle spawns nearby any time a regular Homie is called.
This works with all vehicles, including aircraft.
It does not matter whether a Homie is already recruited.
It does not matter whether or not The Protagonist is inside a vehicle.
It does not matter which vehicle is last driven.
It does not matter if the last delivered vehicle is destroyed.
A duplicate vehicle spawns 100% of the time. As vehicle spawns at the same distance as Homie spawn driving vehicles in previous games, it may be on a nearby street and not immediately located. The vehicle often, but not always, spawns in the direction The Protagonist is facing.
Duplicate cars always spawn on the road.
Duplicating any non-unique variant will spawn a random variant, including the Wraith, which spawns a random Attrazione.
Duplicating any unique variant will only duplicate that specific variant, so the Chrome Rattler cannot be used to spawn other Rattler variants.
This can be used to duplicate unique vehicles, but does not make them customisable.
Saving duplicate vehicles count towards the Garage limit, even if the original does not.
This also works after reloading a saved game, allowing unlockable vehicles to be added to the Garage before unlocking them, and Cheat-summoned vehicles to be added to a non-cheating save.
If the vehicle is in sight when the Homie is spawned, it moves a short distance with the Homie inside before teleporting out of it. This indicates that the glitch occurs because Homies normally spawn inside vehicles in previous games, but since no vehicle is defined for the Homie, the last delivered vehicle is used instead.
This glitch can be used to obtain otherwise unavailable vehicle modifications, such as the 4 Criminal Exhaust Tip variations.
The name "Driveup Homie" is shown on-screen in Saints Row 2 when the homie is recruited and then abandoned: "Driveup Homie has been dismissed!", or when he is killed: "Driveup Homie is down". Like Wheel Woman, he does not have a real name.
The Cellphone list shows the default names of vehicles, not the variant names which are shown at other garages.