A Good-Natured Craftsman Leisurely Travels Through Another World - Vol. 1 Ch. 6

[booterror]

...I've already forgotten if these vehicles are from Japan or from a cave.

 

[Mah_Buddy_Keith]

Family

 

[jonsmth]

I've already forgotten if these vehicles are from Japan or from a cave.

They're from a cave. That place with the "giant soldiers" he went to to prove his bravery.
There is supposedly some technologically advanced ancient civilization in this isekai.

 

[ngekngok]

It's a dumpster fire, i know that, yet i keep wanting more of it.

 

[flannan]

But to be more serious, I'm pretty sure that making heavy machinery bear proof isn't commonly done, I've already forgotten if these vehicles are from Japan or from a cave.

These vehicles are from a mysterious shrine the MC has explored.
As much as Japan would like to have them, they don't.