Creates or modifies ScriptableObject configs in Assets/Scripts/Vehicle/Config/ using the [CreateAssetMenu(menuName = "R8EOX/...")] pattern with [SerializeField] private + public readonly property style. Use when adding tunable motor, suspension, traction, or wheel inertia parameters. Trigger phrases: 'add config', 'new preset', 'tuning ScriptableObject', 'motor config', 'suspension settings', 'wheel inertia config'. Key capabilities: [Header]/[Tooltip] field annotations, AnimationCurve fields with inline keyframes, null-coalescing fallback constants in MonoBehaviours. Do NOT use for runtime per-frame state, temporary values, or non-tuning data.