Can you get to vulcanus without power poles and completely brick yourself?
from what the wiki says you don't need to research alectric energy distribution 2 to get to vulcanus at all

Odd bug that me and another stumbled upon while talking in the factorio discord server.
If you filter an upgrade planner to upgrade an empty module slot to one with a module and in the machine you are trying to upgrade there is already a module past the empty slot, it will not work at all. The same ...

The speed from bioflux and jellynut will not apply; and the initial healing from bioflux and fish will not either.

Pretty self-explanatory; bioflux and yumako will heal vehicles the player is sat in if used.