Japanese automaker Honda Motor Co. has signed a deal with Hitachi Automotive Systems to jointly develop, make and sell motors for electric vehicles, as the industry adapts to concerns over global warming and the environment. The deal, signed last week, is part of a big push by Honda into electric cars. The joint venture, which has yet to be named, will be 51 percent owned by Hitachi and will have manufacturing and sales operations in the U.S. and China, the companies said.