I imagine it has to do with the number of interested people and their level of coordination and civic involvement. I see a couple Kei truck groups on Facebook,

I imagine it has to do with the number of interested people and their level of coordination and civic involvement. I see a couple Kei truck groups on Facebook, but I don't see it comparing to the American Motorcycle Association. Kind of like that meme that Kinder eggs were illegal but not AR-style rifles... well, how many people are petitioning and donating money for Kinder egg legality.