How do you envision the technology of the future? Interplanetary travel, robotics, or maybe even a perpetual motion machine?
What we are sure of is the existence of a time machine used by our great great great grand-children that sent us instructions and materials to create the "Minotaur" - a tank from our future.
Assemble these futuristic vehicles and turn them over to your commanders in exchange for vehicles for pilots, tankers and sailors! In the meantime scientists will study the vehicles you have assembled and prepare them for a mass production in 2077.