Some drivers who own his truck love painting the outer with his own money.
This picture is Kara-Jishi and Botan ( Kara= Chinese, Jishi=lion, and botan =peony).
Kara-jishi-botan is usually used for the tattoo on the back of human body. So this owner painted it on the back of truck. He may want to insist his professional macho pride with this picture, but the ordinary drivers feel some sort of terror for the violence.
I think these drivers would drive their trucks without violence and over-speed. They would be careful not to damage their car and its picture.
(Ishikawacho, Hachioji city, Tokyo)