Car sharing -- Hungary -- Budapest : GreenGos new strategy in the carsharing market of Budapest : how can a start-up defend its market against the largest company in the country? / Zoltan Bakonyi (Strategy Innovation and Sales, Horváth & Partners Management Consultants, Budapest, Hungary), Erik Gyurity (IFUA Horváth & Partners, Baja, Hungary), and Adam Horvath (IFUA Horváth & Partners, Budapest, Hungary)