Solaris to deliver 10 electric buses for Warsaw, Poland July 5, 2017 | Europe Company News The bus operator of Warsaw, Miejskie Zakłady Autobusowe (MZA), has ordered 10 electric buses from Solaris Bus & Coach. Solaris will deliver is Urbino 12 electric buses, which are powered by lithiu... This content is available to only subscribers. Username or E-mail Password Remember Me Forgot Password