Your comments

Well Godmode_On is not a person but a simple tanki account that has infite drugs and uses mammoth and Thunder . He is almost invincible . if he gets killed a gold box drops. just take it as a mechanism or challenge that tanki has given to normal players I.e killing him .
Very  rarely like once in 2 months .
Well there is no specific place as such it can drop anywhere on the map. But still there are some pet locations where it might drop. :)