In the first weeks I tried to explain me, how the things could be as it be. But the first time I produced a car, placed it and found out that the car itself has also an inventory I laughed and laughed, 1 minute and also now I keep smiling.
Currently I think, when the game is ready we can make a tutorial mission. But not on the planet. The tutorial is before the mission starts and explains all the "crazy" game mechanics with some humor. The player is pilot and, before he is allowed to play, he need to make an exam. A trainer explains the pilot the sense of this tutorial:
"You know, you will eventually land on a planet, completely alone and with dangerous aliens, which want all kill you?"
"I don't think so?"
"But when it happens?"
"But it is possible!"
"I don't let you through the exams, if you say that again!"
"O. K. Alone on a planet with bad aliens, what else?"
"Like in the night?"
"Yes, really dark."
"...but only in the night?"
"Maybe... I wasn't there..."
... Some later explaining the player inventory.
"You mean I should wear all that iron plates? One plate is about 5 pounds!"
"You will be very soon accustomed to the weight!"
"No, no, no, wait. One plate is 5 pounds, one stack is 128 plates ... And how many stacks do I have? 40????"
"Don't think about it... It will overwhelm your mental walls I installed!"
"Shhht. Not think about!"
And later on, with the locomotive:
"I don't understand this."
"I can carry a whole locomotive, right?"
"And when I place it, it has an inventory... In which I can put a ... locomotive."
"Right. Do you know matryoshka puppets?"
"That's not how this works; just don't think about it."