I met Martin Vosseler in New York after he walked from Los Angeles to Boston in 7 1/2 months to mobilize the people about solar energy. A former doctor in Switzerland he felt the duty to inspire others and stopped his academic career. A year ago he crossed the Atlantic with a solar boat together with 4 other active scientists and adventurers. He proved that with the energy a hairdryer or a iron needs, you can run a whole boat with two electric motors, the whole technical and kitchen equipment - only with the energy of the available sun-light. After our interview he went back to Europe, but not by plane but on board of a freightliner from Miami to Italy. In his interview he reveals all about his economical and spiritual approach to live.