This makes sense. And they tend to wait until a new technology has proven itself before rolling it out. They take their time. I love it. Although they have switched to the smaller displacement motors with turbo and hybrid motors. Time will tell if they can keep the legendary reliability with the new complicated drive trains. 

Remember

japan

Japan makes the best cars. No competition

Japanese manufacturing is excellent.

I've heard people say that Japanese are not known for inventing things, but perfecting them.

For example, Japanese Whisky