LMAO... my wife just enligthened me with the meaning on this so called jdm badge. so i wikipedia'd it to see if it was true lol.
http://en.wikipedia.org/wiki/Shoshinsha_mark
The Shoshinsha mark (初心者マーク?) or Wakaba mark (若葉マーク?) is a green and yellow V-shaped symbol that new Japanese drivers must display on their cars for one year. A driver must display this mark one in front of the car, and one on back of the car, after they obtain a standard driver's licence, for one year. This obligation is only for a standard license, not for motorcycles, large vehicles, special cars, and so on.
Drivers who consider themselves beginners may also continue to display the sign, even if they have passed a year period.
Its official name is The Beginner Drivers' Sign (初心運転者標識, shoshin untensha hyōshiki?). Conversely, the orange and yellow "Fukushi mark" or "Koreisha mark" denotes elderly drivers.
Both marks are designed to warn other drivers that the marked driver is not very skilled, either due to inexperience or old age.
NOOB DRIVERS!!!! LMFAO 

