Toyota details next-generation hybrids, more efficient gasoline engines

2018 Toyota PriusCars with plugs may be the cleaner and greener future, but at the moment, they make up only about 1 percent of global sales approaching 100 million vehicles a year. That means that automakers continue to work ceaselessly on more efficient gasoline engines and lighter vehicles to put them in. Last week, Toyota summarized its plans in that arena and...