"Byun" is Japanese for "vroom," so "byun2" equates to "vroom-vroom"! And you can certainly vroom around the room with this zippy set of four hot Tomica die-cast race cars. The set includes a Nissan Calsonic Impul GT-R, a Subaru Impreza WRX STI, a Honda Civic Type R, and a Mitsubishi Lancer Evolution X. Not motorized, but they all feature bouncy suspensions, and some have opening doors and hoods.