Could implement it as a new Pawn class with a container for the driver. Make its faction match the driver, add a special ThinkTree that only activates if the container is filled. Raiders spawn with pre-filled vehicles, colonists enter via float menu option. Implement custom TakeDamage method to allow damage to the crew capsule to propagate to the driver. If you want to get fancy you could make multi-crewed vehicles by locking ThinkNodes/stats to passenger number. So you could have e.g. a tank with a driver (unlocks move commands), gunner (unlocks shooting) and commander (boosts stats).
Great Idea! I looked again for an Alpha 16 mod, nothing.
Great Idea! I looked again for an Alpha 16 mod, nothing.