Here are a few suggestions for your next trip from Schliengen

In 2 hours, you can reach Basel, Zürich, Bern, Strasbourg, Luzern.

In 3 hours, you can reach Frankfurt am Main, Winterthur, Stuttgart, Biel/Bienne, Thun.

In 4 hours, you can reach Paris, Schaan, Luxembourg, Vaduz, Esch-sur-Alzette, Genève, Lyon, Dudelange, Triesen, Köln...