T�tes de trains is a collaboration. Since 2002, Didier Philipona makes line drawings on the train Fribourg-Neuch�tel, Fribourg-Geneva, Fribourg-Bern, Fribourg-Bienne, Fribourg-Paris, Fribourg-Z�rich. He spends his time in this microcosm, drawing portraits of travelers. One day he approaches ...