TOYOTA MOTOR said on Tuesday it hoped to boost sales of hybrid cars four times from the current level by doubling the number of gasoline-electric hybrid models by the early 2010s. “We will lead the global market by regarding hybrids as the core technology to solve the environment issue,” Toyota President Katsuaki Watanabe said. Under the plan, the world’s second largest car maker aims to raise hybrid car sales from 235,000 units to one million in the early 2010s, while doubling the number of hybrid models from seven at present, Watanabe said. Toyota also said it would release ethanol-powered motor vehicles in Brazil in 2007 spring.