Grav-plates

Grav-plates are a type of levitation device utilized on automobiles before and after the Great War.

Background
Grav-plates allow vehicles to levitate across the surface of the ground. They utilize a component known as a "recycling power chip." that allow the Grav-plates to consume less energy.

Location
The Chosen One can choose to have them installed on their Highwayman by T-Ray after having their car stolen in New Reno once the Enclave Oil Rig is destroyed.

Appearances
Grav-plates are mentioned only in Fallout 2.