It is that the Emperor's car is a gray 1991 Honda Integra.
Talk about an unpretentious ride.
Not a Nissan. Not even a Toyota. A Honda!
One can imagine His Royal Highness Prince Akishino trying to convince his father it is time to upgrade his mode of transport:
HRH P.A. - Dad, you need a new car.Which brings up question I have never considered before: how do members of the royal family address one another, when they are strictly en famille?
HME - Why?
HRH P.A. - Dad, that car of yours is three technology cycles out of date. How about a Prius or an electric vehicle? You're never going to drive faster than 30 kilometers an hour anyway. Heck, the annual shaken on that car probably costs double what a Siberian is willing to pay for it.
HME - How can I get rid of my car? It's got less than 3000 kilometers on it!
Later - Reader Karayama (?) answers the above question in comments.
Later still - It seems that the above linked-to snippet is the first ever Imperial Household Agency release of video of the emperor at the wheel of his car.