This 3d model can be used in many ways (weapon,car part....), when i created it i was thinking about a tool that someone could use for flying, there is a section for puting the les and it is independant from the rest so you can rotate to create the effect that the person riding this object controlls it with his legs, also you can add fire coming out from the backcylinders so that it function will be obvious. As all the other models you can use whatever way you see fits, i hope you like it.