For war - Mine would be a big train, kinda large (That needs around 20 tracks to move) with an armor, a sort of 'body' armor that would be very close to knights armor.
It would have cannons on each sides, and it would be large enough to contain herds of cows, chickens, weath hydroponic fields and kinda all the necessary to survive without leaving it.It and its crew could be so on able to survive to long periods of siege without surrending or leaving it.It would also contain a shell/bullet factory, and its armour parts all around the body would be in several layers, so when one is near to be destroyed, it is dropped and then replaced by another one.
Also, there would be all the needed material to hack dispatchings, enemy's computers, and radio waves.
As it would need 20 tracks at least to move, the train would be equipped with a huge machine that would put tracks in front of the train as it is going forward, synthetic tracks made out of all the waste created by the (huge) crew of the train and the animals.
There would be, on both sides, in front and back, command centers, fighting positions, etc...
In the highest part of the train would be the main command center, protected by a large skylight, and this center would tell informations to the little command centers all around the train, so these little command centers can themselves tell the orders to the soldiers.
In the middle of the train, and on all its lenght, there would be the barracks, the cattle herds, the hydroponic wheat fields, theaters and pools for officers, poker tables for soldiers, and, as the extra crew (The one that take care of the cultures, the livestock), so the civilian crew, there would be shops, larges rooms, to give them a decent life.
In the deepest area of the train there would be a few tanks : One would be for all kind of water waste & used water, and it would purify all the dirty water so it can go to the pure water tank, and then be used by the crew, and then going back in the used water tank that would purify it again to the pure tank water.Another tank would be for waste that is impossible to turn out into synthetic rails, or any kind of things : This tank would be always open, and all the waste would fall from the two side of the railway, making the infectious diseases going by in the enemy's land, and taking their moral down.
Finally, in the last part of the train, the back, there would be a huge nuclear reactor that would power everything in the train, and the train itself.The nuclear reactor would be of course protected by a huge sarcophagus made out of iron, concret, etc...
As most of the weapons will be artillery and gunnery, the train would also have an infantry battalion, and in case of treason, every member of the crew would be equipped with pistols.And, last but not least, the last weapon of the train would...A cavalry battalion that, if the train suddenly stops, would come out of the front of the train by a huge door opening.The horses would be equippd with little missile launchers on each side of its body, and the horseman would have as usually a pistol and a saber; it may not be of a big use in battles, but if the train is suddenly stopped and took into an ambush, at the last moment, the door would open and the cavalry would come out of it, assaulting by all parts the enemy that would be very surprised and be less reactive.
So as you understood, this train has all the advantages to be invincible.Considering it would be one of the most powerful weapon in the world, I'll say it will be american.So, its name will be : U.S.S
Rockfeller .
So I have searched for a pic of exemple, here's one, but, of course, that's just to give you the general look of it.You can still make it in your own view
I have also a civilian vehicle planned on my mind but...I feel like it will be for later
