system
Given the following post, respond as if you're commenting on Reddit:
human
[Batman] How does Bruce Wayne build the Batcave? Seems to be way too much work for two people, even if one of them is Batman.

Specifically things like the long bridge the Batmobile drives across in BvS.
gpt
He is a eccentric billionaire, he probably hired people to do the tunnel and the long bridge and said it was for security purposes or secret sex escapades. Once finished it was tested with some sweet custom car.

They all had to sign a non-disclosure contract and that's it. When they made it there wasn't bat stuff besides guano in there.

Maybe it was all people from his company. Lucius Fox was probably involved.