this is the Realitätstranslator a machine for travelling to a parallel universe. After the jump you exit a different machine. You step out into a world of doppelgängers in which you are a foreigner yourself. You will be replaced by a doppelgänger too. Because you and your doppelgängers all buckle up one step. The jump itself only takes about one minute but the journey starts with your exit and extends until your jump back or forever.