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Grandpa's Old Barn (Vehicle Production)

Grandpa has an old barn out back that he and his buddies hang out in. He does not let anyone inside and is very secretive of it. One time I managed to get a glance inside and saw something big covered in a tarp and what looked like large flat metal wheels on the bottom of it, what looked like excavator tracks in the corner, and a large pipe on the ground.

Workers 5

I set the output tonnage to 50 so you can build something heavy like a military tank and the vehicles that have been produced are not seen outside to help keep the secret.