Those very flat and long scooters are very popular amount young riders often called "Yankee" or "Yankie" in Japan. Yankee here does not refere to American people, it is a Japanese thug or gang or Bosozoku.
あさこ 
神戸のおいさん 
ロッキーおしょう 
Junya Suzuki 
SETSUKO 
佐藤淳一（朝活習慣化キャリアコーチ） 
SanDiegoTown & LosAngelesTown 
田仲なお美 
橋本諭弥 
木曽町田中屋豆腐 
KUMA