An English-, Russian- or Georgian-speaking chauffeur who knows the roads — for an evening, a route, or the length of your stay.
Mountain passes to Kazbegi, the wine country of Kakheti, a night across Tbilisi — your driver plans the timing, the stops and the parking, so you only watch the window.
Background-checked, uniformed on request, briefed on your schedule. They stay with the car, so it's always ready when you are.