I recently created a home built
Starship Pilot class for a Sci-Fi PF game based on the EN Publishing Santiago setting rules, using "ranger" as a template, though its not intended to be a ranger archetype, rather its own base class. As a part of this build, I created the Pilot ability which is five levels of vehicle training, with Pilot 1 allowing driver skills use of automobiles, motorcycles, hovercraft, submersibles, aerial vehicles, escape pods and orbiting shuttles. Pilot 5 at 19th level allows a starship pilot to manage an interstellar fleet. This doesn't fit your premise of a vehicle for a cavalier class, however.
I would certainly allow a sci-fi based "cavalier" to be able to operate an automobile, motorcycle, hovercraft (including a hoverbike), submersible, aerial vehicle, etc. The ride skill would be of obvious use to perform difficult driving maneuvers, though I don't know if there'd be a reason to replace "handle animal" with something else.