Please help to plan a road trip through Europe?

Hello. We are planning to drive this Easter through Europe. We have around 10 days in hand. We are taking the Euro Tunnel from Folkestone (UK) to Calais (France). We do not want to see too many cities as such (we have been to cities like paris/berlin/venice/brugges/vienna); our idea is to drive through scenic routes/countrysides etc. Can you suggest a few itineraries please?