Innovative Hybrid Vehicle Engine Technologies, Toyota, Shunsuke Fushiki

It already past more than 10 years since first Prius was released in 1997 in Japan, and also released in 1999 at USA. This time I'd like to explain the engine technologies which TOYOTA hybrid vehicle adopted to achieve the targets. Which are; 1. Environmental performance, 2. Fun-to-drive; and also I'd like to explain about the PHEV engine technologies, and future target for HV engine.