My husband and I and another couple will have finished a bike tour through the Champagne and Alsace region in France ending in Strasbourg France. We are planning on continuing into Switzerland and looking to visit possibly Bern, Lucern and that region. We would love any suggestions on where to stay, interesting sites and fun things to do. We will have a rental car. Our friends will be flying back to the States from Zurich but my husband and I will be traveling back to Paris by car. Suggestions also on an interesting route back for us.
Since you have a car, and sound like the sort of people who want to experience the outdoors, I will go out on a limb and suggest Engleberg.
Website here: http://www.engelberg.ch/en/
This is a small town at the end of a valley near Luzern. Lots of cable cars up the valley sides. Including one up Titlis (3000 metres, website: http://www.titlis.ch/en ) which has a glacier at the top which you can go in and over.
Engelberg is also a good base for exploring the Vierwaldstättersee (Lake Luzern) are by car.