FRANKFURT, Oct 16 (Reuters) – Tesla (TSLA.O) boss Elon Musk has addressed 200 Volkswagen (VOWG_p.DE) executives via a video call after an invitation from the German carmaker’s CEO Herbert Diess, who wants to galvanise VW’s top brass for a faster pivot to electric vehicles. The comments on Thursday by Musk to a VW managers gathering in Alpbach, Austria, confirmed by Diess via Twitter on Saturday after a report in Handelsblatt daily, included praise of VW for being an “icon” and Tesla’s greatest challenger , Handelsblatt said.