This is A DTTB. A Droid Track Transport Bike. Used by the CIS during just before the creation of the Clones. It is a largely unremembered vehicle as they were hily unreliable especialy the seat platform, as if the bolt underneath broke or came away, the seat would flick forwards and throw the droid poilot through the window and into the spiked disks that drove the tracks. Enjoy!