I didn't hear if the Mercedes-Benz accepting bitcoin and tesla is never making an announcement about they were officially accepting bitcoin for their payment. Especially for apple too. 
Mercedes Benz a part of Daimler already announced their bitcoin acceptance for their services. Several big companies have started to accept bitcoin with official announcement. Microsoft has made a investment in creating its own Blockchain for specific purpose along with an Indian company. Those all are to show the world about bitcoin's increasing acceptance and universal growth.