I haven't found any information about the Daihatsu Fellow Max Electric Car prototype in this event (1970 Tokyo Motor Show).
On the car door, it really written "フェロー MAX" (it means the model name Fellow Max) and also written "ELECTRIC CAR" (of course, it is in English language, not 電気自動車 or でんきじどうしゃ) prototype in this event (1970 Tokyo Motor Show).